Gives the design details of the device or fitting known as a trolley wire ears that holds a tramway copper trolley wire in position. Notes that the drawing was traced in 1924 from a MMTB drawing. Has details for a splicing ear, straight line ear. feeder ear and curve ear along with details for nuts and screws.Yields information about the design of four different types of trolley wire fittings and how they were fabricated for use on the two tram lines, or electric street railways operated by the Victorian Railways.Dyeline print of Victorian Railways drawing number 4057 - Ears for Tramway Overhead ConstructionHas number "7513 D.33" in black pen in bottom right hand corner.tramways, trams, overhead, victorian railways, trolley wire, engineering, electrical engineering

Gives the design details of the device or fitting known as a trolley wire ear that holds a tramway copper trolley wire in position. Notes that the drawing was traced in 1958 from a MMTB drawing.Yields information about the design of trolley wire fittings and how they were fabricated. Interesting that the drawing is dated 15-8-1958, given that on 1-3-1958 the last street tramways operated by the Victorian Railways closed. May have been used for electrically powered gantry cranes or overhead travelling cranes used in Workshops and railway yards.Dyeline print of Victorian Railways drawing - F6236 - Ears Female TramwayHas number "7515 D.33" in black pen in bottom right hand corner.tramways, trams, overhead, victorian railways, trolley wire, engineering, electrical engineering

Part of "Woolcock Gallery Collection" Exhibition, CEMA, 1989.Three plant studies. At top of page is a study of a broad-leafed stem, with eight leaves and two flowers. On the right of this study are two pen and ink views of flower buds. Below in page centre is a plant with many small leaves and multiple stems. There are many small round flowers. On left of study are a flower, bud and leaf study. On the right there are two bud studies, one flowering stem study and one leaf study.Front: Cymbonotus preissianus (Austral Bear's Ears). Centipeda minima (Spreading Sneezeweed). " cunninghamii (lower left) (pencil) Back: 26 (upper left) (pen)botanical drawing, collin woolcock, woolcock, woolcock collection, cema

Denis Gibbons (1937 – 2011) Trained with the Australian Army, before travelling to Vietnam in January 1966, Denis stayed with the 1st Australian Task Force in Nui Dat working as a photographer. For almost five years Gibbons toured with nine Australian infantry battalions, posting compelling war images from within many combat zones before being flown out in late November 1970 after sustaining injuries. The images held within the National Vietnam Veterans Museum make up the Gibbons Collection. A black and white photograph of Gnr Dave Thomas & Gnr Owen Herbert tense themselves and cover their ears against the concussion of the artillery gun. photograph, gibbons collection catalogue, artillery, gnr dave thomas, gnr owen herbert, denis gibbons

Ear plugs for domestic use.Ear plugs in clear plastic container with metal screw capTwo Nods Anti-noise Ear stoppers & directions for usemedical, home use

Metro Trains refused to install CCTV at Watsonia Station carparkNews clipping, black text.watsonia railway station, metro trains

Discussion of Newsline service provided by the AFB and how it is used by Neil Maxwell. Article includes an image of Neil holding a phone, whose base rests on a desk in a study, and turns towards camera.1 cut out article from a suburban newspapernon-fictionassociation for the blind, elizabeth maxwell, neil maxwell, newsline, robyn fowler

Ear plugs supplied to service personnel for protection from noise.Small tin container, green exterior and gold inside. Writing in black. Contains 2 brown leather ear plugs in a small white box with red writing. Also contains a tube of antiseptic ointment wrapped in paper.On front labelled "Protectors Ear Drum" and "(Aust) MKI M". Inside lid detailed instructions for use and care in words and pictures. Scratched into back No. "94397".passchendaele barracks trust, equipment, ear plugs

Ear cup stamped with 10A/12161, rear of earphone stamped with Ref No.10A/13466.

The Phonic Ear hearing aids were actually auditory trainers for children in school. This is the teachers transmitter which they would wear. Beige FM Microphone Transmitter with plastic loop for over the head and a small black hearing device and a microphone in the top. Individually decorated with plastic girl sticker, upside down, (put there by the wearer?) "PHONIC EAR" "FM/MICROPHONE/TRANSMITTER" on front. "PHONIC EAR/MODEL HC4211/TYPE GODKENOT" on back. "3335 173" scratched on back. deaf children australia, hearing aid, auditory training device, phonic ear

Wax was used to smooth sewing thread, an ear spoon was used to collect wax from the ear canal for this purposeSilver ear spoon in a sewing etui (may not be original to the box). The ability of early cotton and threads to pass through fabric was improved with the application of wax. Ear spoon on end of a silver handle with a blunt pointBarley twist in middle of shaft.

The Phonic Ear hearing aids were actually auditory trainers for children in school. This aid was also an FM receiver so the child could clearly hear the teacher's voice. Cream plastic hearing aid, rectangular with hearing aid cable (no hearing aid) and small microphone attached. Used as an auditory training device for deaf children. "PHONIC EAR" on the front at the bottom left hand. "FM PHONIC EAR/TYPE HC441 T/TYPE GODKENDT//TYPE APPROVED" on back silver label

White square cardboard tube with white cardboard drawer that slides inside, red lettering to outside. Clear plastic bag with one pair of ear plugs inside, possibly another pair missing Red lettering to outside of cardboard Ear drums When not in use, replace in BOX

Part of a tramway overhead wiring system, supplying electricity to power the tram. Two devices bolted together; a 'Hanger' and an 'Ear'. Together these devices suspend the tramway trolley wire from the 'side bracket', or a 'span wire'.Historical EquipmentTwo devices bolted together; a 'Hanger' and an 'Ear'. The ear is a '4 screw' ear. Together these devices suspend the tramway trolley wire from a 'side bracket', or a 'span wire'. There is a short piece of trolley wire attached to the ear.68/16 stamped on one sidetramways, equipment, trolleywire

Made for JNO (John) Baker Veterinary Manufacturers, Suppliers and Retailers Sydney. Most sheep in Australia that intended to be kept into adulthood are earmarked. There are dozens of different types of ear markers.New ear marker toolsheep identification, sheep - identification

The first all transistor hearing aids appeared in 1953. They were created to replace vacuum tubes; they were small, required less battery power and had less distortion and heat than their predecessor. The vacuum tubes were typically hot and fragile, so the transistor was the ideal replacement. The size of these transistors led to developments in miniature, carbon microphones. These microphones could be mounted on various items. There were body hearing aids where the earpiece was connected to the hearing aid and battery pack worn on the body. Ear level hearing aids consisted of eyeglass, behind the ear (BTE), in the ear (ITE), and in the canal (ITC, CIC) hearing aids. Tan plastic case hearing aid, with wire, ear piece and ear mold with metal clip. Made in England and sold by Myer Hearing Service. "MYER/HEARING SERVICE" engraved in gold on case. "MADE IN ENGLAND" on bottom of case. deaf children australia, hearing aid, myer hearing service

In 1821 the French otologist Jean Marc Itard irrigated the ear canal to remove hard wax, by using a syringe prototype designed for enemas which was made from tin and brass. This glass and cork ear syringe was manufactured by the Ambson Company in the United Kingdom, about eighty years afterwards. Its lightweight properties would have been ideal for application to the sensitive regions of the ear canal. https://www.racgp.org.au/the-racgp/history/the-racgp-museum-collection/syringes/ambson-ear-syringe Otology is a branch of medicine which studies normal and pathological anatomy and physiology of the ear (hearing and vestibular sensory systems and related structures and functions) as well as their diseases, diagnosis and treatment. Otologic surgery generally refers to surgery of the middle ear and mastoid related to chronic otitis media, such as tympanoplasty, or ear drum surgery, ossiculoplasty, or surgery of the hearing bones, and mastoidectomy. Otology also includes surgical treatment of conductive hearing loss, such as stapedectomy surgery for otosclerosis. https://en.wikipedia.org/wiki/Otology The ear syringe was donated to Flagstaff Hill Maritime Village by the family of Doctor William Roy Angus, Surgeon and Oculist. It is part of the “W.R. Angus Collection” includes historical medical equipment, surgical instruments and material once belonging to Dr Edward Ryan and Dr Thomas Francis Ryan, (both of Nhill, Victoria) as well as Dr Angus’ own belongings. The Collection’s history spans the medical practices of the two Doctors Ryan, from 1885-1926 plus that of Dr Angus, up until 1969. ABOUT THE “W.R.ANGUS COLLECTION” Doctor William Roy Angus M.B., B.S., Adel., 1923, F.R.C.S. Edin.,1928 (also known as Dr Roy Angus) was born in Murrumbeena, Victoria in 1901 and lived until 1970. He qualified as a doctor in 1923 at University of Adelaide, was Resident Medical Officer at the Royal Adelaide Hospital in 1924 and for a period was house surgeon to Sir (then Mr.) Henry Simpson Newland. Dr Angus was briefly an Assistant to Dr Riddell of Kapunda, then commenced private practice at Curramulka, Yorke Peninsula, SA, where he was physician, surgeon and chemist. In 1926, he was appointed as new Medical Assistant to Dr Thomas Francis Ryan (T.F. Ryan, or Tom), in Nhill, Victoria, where his experiences included radiology and pharmacy. In 1927 he was Acting House Surgeon in Dr Tom Ryan’s absence. Dr Angus had become engaged to Gladys Forsyth and they decided he further his studies overseas in the UK in 1927. He studied at London University College Hospital and at Edinburgh Royal Infirmary and in 1928, was awarded FRCS (Fellow from the Royal College of Surgeons), Edinburgh. He worked his passage back to Australia as a Ship’s Surgeon on the on the Australian Commonwealth Line’s T.S.S. Largs Bay. Dr Angus married Gladys in 1929, in Ballarat. (They went on to have one son (Graham 1932, born in SA) and two daughters (Helen (died 12/07/1996) and Berenice (Berry), both born at Mira, Nhill ) According to Berry, her mother Gladys made a lot of their clothes. She was very talented and did some lovely embroidery including lingerie for her trousseau and beautifully handmade baby clothes. Dr Angus was a ‘flying doctor’ for the A.I.M. (Australian Inland Ministry) Aerial Medical Service in 1928 . Its first station was in the remote town of Oodnadatta, where Dr Angus was stationed. He was locum tenens there on North-South Railway at 21 Mile Camp. He took up this ‘flying doctor’ position in response to a call from Dr John Flynn; the organisation was later known as the Flying Doctor Service, then the Royal Flying Doctor Service. A lot of his work during this time involved dental surgery also. Between 1928-1932 he was surgeon at the Curramulka Hospital, Yorke Peninsula, South Australia. In 1933 Dr Angus returned to Nhill and purchased a share of the Nelson Street practice and Mira hospital (a 2 bed ward at the Nelson Street Practice) from Dr Les Middleton one of the Middleton Brothers, the current owners of what previously once Dr Tom Ryan’s practice. Dr Tom and his brother had worked as surgeons included eye surgery. Dr Tom Ryan performed many of his operations in the Mira private hospital on his premises. He had been House Surgeon at the Nhill Hospital 1902-1926. Dr Tom Ryan had one of the only two pieces of radiology equipment in Victoria during his practicing years – The Royal Melbourne Hospital had the other one. Over the years Dr Tom Ryan had gradually set up what was effectively a training school for country general-practitioner-surgeons. Each patient was carefully examined, including using the X-ray machine, and any surgery was discussed and planned with Dr Ryan’s assistants several days in advance. Dr Angus gained experience in using the X-ray machine there during his time as assistant to Dr Ryan. When Dr Angus bought into the Nelson Street premises in Nhill he was also appointed as the Nhill Hospital’s Honorary House Surgeon 1933-1938. His practitioner’s plate from his Nhill surgery is now mounted on the doorway to the Port Medical Office at Flagstaff Hill Maritime Village, Warrnambool. When Dr Angus took up practice in the Dr Edward and Dr Tom Ryan’s old premises he obtained their extensive collection of historical medical equipment and materials spanning 1884-1926. A large part of this collection is now on display at the Port Medical Office at Flagstaff Hill Maritime Village in Warrnambool. In 1939 Dr Angus and his family moved to Warrnambool where he purchased “Birchwood,” the 1852 home and medical practice of Dr John Hunter Henderson, at 214 Koroit Street. (This property was sold in1965 to the State Government and is now the site of the Warrnambool Police Station. and an ALDI sore is on the land that was once their tennis court). The Angus family was able to afford gardeners, cooks and maids; their home was a popular place for visiting dignitaries to stay whilst visiting Warrnambool. Dr Angus had his own silk worm farm at home in a Mulberry tree. His young daughter used his centrifuge for spinning the silk. Dr Angus was appointed on a part-time basis as Port Medical Officer (Health Officer) in Warrnambool and held this position until the 1940’s when the government no longer required the service of a Port Medical Officer in Warrnambool; he was thus Warrnambool’s last serving Port Medical Officer. (Masters of immigrant ships arriving in port reported incidents of diseases, illness and death and the Port Medical Officer made a decision on whether the ship required Quarantine and for how long, in this way preventing contagious illness from spreading from new immigrants to the residents already in the colony.) Dr Angus was a member of the Australian Medical Association, for 35 years and surgeon at the Warrnambool Base Hospital 1939-1942, He served with the Australian Department of Defence as a Surgeon Captain during WWII 1942-45, in Ballarat, Victoria, and in Bonegilla, N.S.W., completing his service just before the end of the war due to suffering from a heart attack. During his convalescence he carved an intricate and ‘most artistic’ chess set from the material that dentures were made from. He then studied ophthalmology at the Royal Melbourne Eye and Ear Hospital and created cosmetically superior artificial eyes by pioneering using the intrascleral cartilage. Angus received accolades from the Ophthalmological Society of Australasia for this work. He returned to Warrnambool to commence practice as an ophthalmologist, pioneering in artificial eye improvements. He was Honorary Consultant Ophthalmologist to Warrnambool Base Hospital for 31 years. He made monthly visits to Portland as a visiting surgeon, to perform eye surgery. He represented the Victorian South-West subdivision of the Australian Medical Association as its secretary between 1949 and 1956 and as chairman from 1956 to 1958. In 1968 Dr Angus was elected member of Spain’s Barraquer Institute of Barcelona after his research work in Intrasclearal cartilage grafting, becoming one of the few Australian ophthalmologists to receive this honour, and in the following year presented his final paper on Living Intrasclearal Cartilage Implants at the Inaugural Meeting of the Australian College of Ophthalmologists in Melbourne In his personal life Dr Angus was a Presbyterian and treated Sunday as a Sabbath, a day of rest. He would visit 3 or 4 country patients on a Sunday, taking his children along ‘for the ride’ and to visit with him. Sunday evenings he would play the pianola and sing Scottish songs to his family. One of Dr Angus’ patients was Margaret MacKenzie, author of a book on local shipwrecks that she’d seen as an eye witness from the late 1880’s in Peterborough, Victoria. In the early 1950’s Dr Angus, painted a picture of a shipwreck for the cover jacket of Margaret’s book, Shipwrecks and More Shipwrecks. She was blind in later life and her daughter wrote the actual book for her. Dr Angus and his wife Gladys were very involved in Warrnambool’s society with a strong interest in civic affairs. He had an interest in people and the community They were both involved in the creation of Flagstaff Hill, including the layout of the gardens. After his death (28th March 1970) his family requested his practitioner’s plate, medical instruments and some personal belongings be displayed in the Port Medical Office surgery at Flagstaff Hill Maritime Village, and be called the “W. R. Angus Collection”.The W.R. Angus Collection is significant for still being located at the site it is connected with, Doctor Angus being the last Port Medical Officer in Warrnambool. The collection of medical instruments and other equipment is culturally significant, being an historical example of medicine from late 19th to mid-20th century. Dr Angus assisted Dr Tom Ryan, a pioneer in the use of X-rays and in ocular surgery.Glass ear syringe. Has cork stopper at top and cotton wrapped at base of plunger. Has a curved end.None.flagstaff hill, warrnambool, shipwrecked-coast, flagstaff-hill, flagstaff-hill-maritime-museum, maritime-museum, shipwreck-coast, flagstaff-hill-maritime-village, otology, ears, ear syringe, deafness, ear wax

Worn by Swinfield in IraqWorn by Swinfield in IraqBlack edge trimmed green fibreglass Army vehicle intercom helmet. Adjustable head straps inside helmet, Adjustment strap for right earphone located on ouside of right ear. Earphones mounted inside helmet at each ear side. Voice microphone located at mounting on outside of the left ear connected by black cable to mounting on outside of left ear. Cable connection with clip for helemt connection to vehicle located at outside of left ear. Switch located on mounting on outside of left ear. Plastic mounting box located on ouside of the left ear. Brown leather sweat band on helmet straps on inside front of the helmet. Male and female connections on end of vehicle connection point.Swinfield marked on outside front of helmet. 34B marked on outside of helmet at rear. Roamwell Corp. with number SA-1552,6 marked on plastic mounting on outside of right ear. Front and back markings on microphone. M138/6 marked on back of microphone. ID label on connection point end of vehicle connection cable.

The first commercial digital hearing aid was created in 1987 by the Nicolet Corporation. The hearing aid contained a body-worn processor that had a hardwire connection with an ear mounted transducer. While the Nicolet Corporation’s hearing aid was not publicly successful and the company shortly folded, it was able to start a competition between companies to create more effective hearing aids. Two years later, in 1989, the behind-the-ear (BTE) digital hearing aid was launched. In addition to the Nicolet Corporation, Bell Laboratories expanded upon the hearing aid business by developing a hybrid digital-analog hearing aid. When the hearing aid was put on in the market, it was instantaneously successful. This development helped bring major changes to the world of the hearing aid. The next major milestone was creating an all-digital hearing aid. The Oticon Company developed the first digital hearing aid in 1995, but it was only distributed to audiological research centers for research on digital technology in the realm of acoustic amplification. The Senso was the first commercially successful, all-digital hearing aid, and was created by Widex in 1996. After the success of the Senso, Oticon began marketing their own hearing aid, the DigiFocus. Presently, the digital hearing aid is now become programmable. By making the hearing aid programmable, it has allowed hearing aids to be capable of regulating sound on their own, without using a separate control. The hearing aid can now adjust itself depending on what environment it is in and often does not even need a physical volume control button. Single Behind-the-ear hearing aid with ear mould. "BOSCH/GERMANY" on the side bottom of aid, "7327476" on face, "46AYG-D" on inside edge

The first all transistor hearing aids appeared in 1953. They were created to replace vacuum tubes; they were small, required less battery power and had less distortion and heat than their predecessor. The vacuum tubes were typically hot and fragile, so the transistor was the ideal replacement. The size of these transistors led to developments in miniature, carbon microphones. These microphones could be mounted on various items. There were body hearing aids where the earpiece was connected to the hearing aid and battery pack worn on the body. Ear level hearing aids consisted of eyeglass, behind the ear (BTE), in the ear (ITE), and in the canal (ITC, CIC) hearing aids. A Universal hearing aid supplied by Angus & Coote Hearing Aids. Universal Hearing Aids were manufactured by British Hearing Aids (Aust) P/L. Includes ear mould for right ear. In a teal leather box. ""Universal"/Mod 73-824" on back of pack. "Angus & Coote/HEARING AIDS" on inside of case.

Ear tags are used for identification of domestic livestock and other animals to assist in stock management. They can be marked individually with letters, numbers or symbols.Four aluminium sheep identification ear tags, featuring imprinted numbers and letters with two holes for fastening.753.1: A.M.C.G / 86 753.2: A.M.C.G / 97 753.3: A.M.C.G / 99 753.4: A.M.C.G / 100sheep identification, sheep - identification, ear tags, stock management, wool industry

The first all transistor hearing aids appeared in 1953. They were created to replace vacuum tubes; they were small, required less battery power and had less distortion and heat than their predecessor. The vacuum tubes were typically hot and fragile, so the transistor was the ideal replacement. The size of these transistors led to developments in miniature, carbon microphones. These microphones could be mounted on various items. There were body hearing aids where the earpiece was connected to the hearing aid and battery pack worn on the body. Ear level hearing aids consisted of eyeglass, behind the ear (BTE), in the ear (ITE), and in the canal (ITC, CIC) hearing aids. Hearing aid with Pink and silver metal pack with attached wire to ear piece. Uses (A) battery. Ear piece moulded for wearer with dials for adjustments. In original box. Transitone and Universal Hearing Aids were manufactured by British Hearing Aids (Aust) P/L. Model 61T. NoV848 "TRANSITONE & UNIVERSAL/HEARING AIDS/BRITISH HEARING AIDS (AUST) P/L" printed on fabric inside lid of box. Inside battery compartment, label "MODEL 61T" ('T' handwritten) "V848" inscribed on hinge.

The first all transistor hearing aids appeared in 1953. They were created to replace vacuum tubes; they were small, required less battery power and had less distortion and heat than their predecessor. The vacuum tubes were typically hot and fragile, so the transistor was the ideal replacement. The size of these transistors led to developments in miniature, carbon microphones. These microphones could be mounted on various items. There were body hearing aids where the earpiece was connected to the hearing aid and battery pack worn on the body. Ear level hearing aids consisted of eyeglass, behind the ear (BTE), in the ear (ITE), and in the canal (ITC, CIC) hearing aids. A new aid type, the Calaid V, was introduced featuring a forward facing microphone, and three potentiometers for adjustment of maximum gain, maximum power output, and low frequency roll off. The Calaid V was introduced in the early 1980s and remained the most frequently used aid in NAL's service for the next ten years (From: THE CALAID: AUSTRALIA'S OWN HEARING AID by Laurie Upfold and Ray Piesse Single Behind-the-ear hearing aid. Provided and manufactured by the NAL (National Acoustic Laboratories), part of the Commonwealth Department of Health. "CALAID/V" on bottom face

The first commercial digital hearing aid was created in 1987 by the Nicolet Corporation. The hearing aid contained a body-worn processor that had a hardwire connection with an ear mounted transducer. While the Nicolet Corporation’s hearing aid was not publicly successful and the company shortly folded, it was able to start a competition between companies to create more effective hearing aids. Two years later, in 1989, the behind-the-ear (BTE) digital hearing aid was launched. In addition to the Nicolet Corporation, Bell Laboratories expanded upon the hearing aid business by developing a hybrid digital-analog hearing aid. When the hearing aid was put on in the market, it was instantaneously successful. This development helped bring major changes to the world of the hearing aid. The next major milestone was creating an all-digital hearing aid. The Oticon Company developed the first digital hearing aid in 1995, but it was only distributed to audiological research centers for research on digital technology in the realm of acoustic amplification. The Senso was the first commercially successful, all-digital hearing aid, and was created by Widex in 1996. After the success of the Senso, Oticon began marketing their own hearing aid, the DigiFocus. Presently, the digital hearing aid is now become programmable. By making the hearing aid programmable, it has allowed hearing aids to be capable of regulating sound on their own, without using a separate control. The hearing aid can now adjust itself depending on what environment it is in and often does not even need a physical volume control button. These were the first behind the ear hearing aids manufactured by the National Acoustic Laboraties (NAL) in Australia Body worn hearing aid consisting of separate pieces, one for each ear with attached ear mould, for one ear, in original box. Provided and manufactured by the NAL (National Acoustic Laboratories), part of the Commonwealth Department of Health. "NAL" in centre of stylised map of Australia. "COMMONWEALTH/DEPARTMENT OF HEALTH" on inside of box. "IV" and "F.McD/RIGHT" manually etched on hearing aid. "II" manually etched on other hearing aid. "CAL AID H" inscribed on inside edge of hearing aid.

The first commercial digital hearing aid was created in 1987 by the Nicolet Corporation. The hearing aid contained a body-worn processor that had a hardwire connection with an ear mounted transducer. While the Nicolet Corporation’s hearing aid was not publicly successful and the company shortly folded, it was able to start a competition between companies to create more effective hearing aids. Two years later, in 1989, the behind-the-ear (BTE) digital hearing aid was launched. In addition to the Nicolet Corporation, Bell Laboratories expanded upon the hearing aid business by developing a hybrid digital-analog hearing aid. When the hearing aid was put on in the market, it was instantaneously successful. This development helped bring major changes to the world of the hearing aid. The next major milestone was creating an all-digital hearing aid. The Oticon Company developed the first digital hearing aid in 1995, but it was only distributed to audiological research centers for research on digital technology in the realm of acoustic amplification. The Senso was the first commercially successful, all-digital hearing aid, and was created by Widex in 1996. After the success of the Senso, Oticon began marketing their own hearing aid, the DigiFocus. Presently, the digital hearing aid is now become programmable. By making the hearing aid programmable, it has allowed hearing aids to be capable of regulating sound on their own, without using a separate control. The hearing aid can now adjust itself depending on what environment it is in and often does not even need a physical volume control button.These were the first behind the ear hearing aids manufactured by the National Acoustic Laboraties (NAL) in Australia Single behind-the-ear hearing aid.

The first all transistor hearing aids appeared in 1953. They were created to replace vacuum tubes; they were small, required less battery power and had less distortion and heat than their predecessor. The vacuum tubes were typically hot and fragile, so the transistor was the ideal replacement. The size of these transistors led to developments in miniature, carbon microphones. These microphones could be mounted on various items. There were body hearing aids where the earpiece was connected to the hearing aid and battery pack worn on the body. Ear level hearing aids consisted of eyeglass, behind the ear (BTE), in the ear (ITE), and in the canal (ITC, CIC) hearing aids. Part of the development of hearing aids Gold and burgundy metal casing, with an ear piece attached by wire. This is a body-worn hearing aid, with user instruction booklet. Manufactured by Rexton a subsidiary of Siemens."647 IV" on bottom of case, along with controls, "H N L" "M T O" and a numbered dial deaf children australia, hearing aid, rexton, siemens

Illustrated textbook with yellow binding. Black print on front cover details title, authors, and publisher, and the coat of arms of The Royal Victorian Eye and Ear Hospitalnon-fictionBook provides an overview of the anatomy of the eyeball, ocular disorders, diagnostic techniques, eye diseases, trauma and pharmacologynursing study and teaching, opthamology, eye diseases, opthalmic nursing, eye anatomy

Illustrated stapled textbook with white binding. Front cover has black print detailing title and publisher, and the coat of arms of The Royal Victorian Eye and Ear Hospitalnon-fictionHistoric manual covering topics such as ear, nasal and throat anatomy, related diseases, surgery and nursing practicenursing study and teaching, otolaryngology, ent nursing

Illustrated textbook with white bonding. Front cover has black print detailing title and publisher, and the coat of arms of The Royal Victorian Eye and Ear Hospital. Book haas been covered with a ceal plastic filmnon-fictionHistoric manual covering topics such as ear, nasal and throat anatomy, related diseases, surgery and nursing practicenursing study and teaching, otolaryngology, ent nursing