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Lakes Entrance Historical Society
Photograph - Lakes Entrance, 1985c
Photo was cut from Tourist brochureColour photograph showing aerial view of township and the Ninety Mile Beach. Pecks factory on Bullock Island, Old North Arm bridge, bitumen for carpark for future. Fishermen's Club near North Arm Bridge. Photo shows East end of Rigby Island and Snake Island. Glimpse of Red Bluff, Lake Bunga and Lake Tyers in far east. Lakes Entrance Victoriabridges, coast, waterways, topography, township -
Lakes Entrance Historical Society
Photograph - North Arm Lakes Entrance, 2008
Date made August 2008Colour photograph of North Arm and Cunninghame Arm, taken from Jemmys Point, shows small bridge to Bullock Island, the Seamec educational facility in the background. Lakes Entrance Victoriabridges, fishing industry, islands, waterways, topography -
Lakes Entrance Historical Society
Postcard - Backwater, Bulmer H D, 1922c
Black and white photographic postcard, showing early aerial view of township of Lakes Entrance, Cunninghame Arm, North Arm and sand dunes, ocean in lower foreground, Eastern wharf and various boats on lake. Princes Highway went along Esplanade, Myer Street and Roadknight Street, very little vegetation on sand dunes, no foot bridge yet, good view of North Arm, few houses. Lakes Entrance VictoriaLakes Entrance and Backwater from the Air.islands, aerial photograph, waterways, topography, township -
Lakes Entrance Historical Society
Postcard - Lakes Entrance, 1923c
Also large postcard 15 x 20|Also two mini postcard 6 x 9|Also copy black and white 9 x 14.5Black and white postcard of an aerial view of township of Lakes Entrance, showing western end of town, jetties and boat harbours in Cunninghame Arm, the entrance and piers, North Arm bridge, Bullock Island, Rigby, Fraser and Flannegan Islands, and a distant view of Boole Poole, Bunga Arm and Lake King. Lakes Entrance VictoriaAn aerial view showing position of Lakes Entranceaerial photograph, islands, waterways, topography, township -
Lakes Entrance Historical Society
Photograph - Lakes Entrance, Kruger A F, 1960c
Colour photograph aerial view of the entrance from Bass Strait to the Gippsland Lakes, Australia. Shows extension to Bullock Island, town of Lakes Entrance, Cunninghame Arm and North Arm. Lakes Entrance Victoriaaerial photograph, islands, waterways, topography, township -
Lakes Entrance Historical Society
Book, Haskell, Arnold L, Waltzing Matilda - A Background to Australia - The Diggers Edition, 1943
A view of Australia and Australians seen through the eyes of the author during his years of travel and association with Australians. Illustrated with photographs. IndexedRuth Clarksocial history, township, natural history, topography, law -
Lakes Entrance Historical Society
Photograph - Lakes Entrance, Gippsland Ports, 2006 c
Colour aerial photograph showing the entrance to Gippsland Lakes from Bass Strait westward to Reeves Channel Shaving Point at Metung through Lake King to Tambo River Gippsland Lakes Victoriaaerial photograph, waterways, township, topography, lakes entrance -
Lakes Entrance Historical Society
Photograph - Jemmys Point Lakes Entrance, Tidy Town Committee, 1996 c
Also a second similar photograph number 03875.1 size 10 x 15 cmColour photograph taken from Jemmys Point looking west through the Gippsland Lakes to Metung with Rigby, Fraser and Flannagan Islands to the south Kalimna Victoriaaerial photograph, township, topography, waterways, jemmys point lakes entrance -
Lakes Entrance Historical Society
Photograph - Merrangbaur Hill, 1925c
Black and white photograph of Merrangbaur Hill, showing Merrangbaur House, and an old vine covered tree, which was a landmark for vessels at sea off the coast. Fenced off roadway at base of hill with water course alongside. Distant glimpse of surf and ocean. Lakes Entrance Victoriaguesthouses, roads and streets, topography, coast, fences -
Lakes Entrance Historical Society
Photograph - Cliffcrest Tea Gardens Gippsland Lakes Victoria, 1920
six adults and a child in the garden at Cliffcrest Tea Gardens above Harpers Bay view of Flannigan Island, lakes and outer barrier in distance, Gippsland Lakes VictoriaBlack and white photograph showing six adults and a child in the garden at Cliffcrest Tea Gardens above Harpers Bay view of Flannigan Island, lakes and outer barrier in distance, Gippsland Lakes Victoria islands, fences, topography, businesses, tourism -
Lakes Entrance Historical Society
Photograph - SS Gippsland on Gippsland Lakes, 1927
postcard taken from Jemmys Point with SS Gippsland in the Narrows passing Rigby Island, Snake Island and outer barrier in distanceBlack and white copy of postcard taken from Jemmys Point with SS Gippsland in the Narrows passing Rigby Island, Snake Island and outer barrier in distancevegetation, waterfront, gippsland lakes, topography, boats and boating -
Forests Commission Retired Personnel Association (FCRPA)
Ventimeter, Wind anemometer in cardboard tube
Bushfire behaviour is influenced by many factors including temperature, relative humidity (RH), forest type, fuel quantity and fuel dryness, topography and even slope. But wind has a dominant effect on the Rate of Spread (ROS), as well as fire size, shape and direction. Wind speed can be measured using a variety of anemometers. This simple hand-held Venitimer was made by Elvometer in Sweeden, probably in the 1960s, and was designed for principally for mariners. Some models have a compass in the handle to measure wind direction. The small inlet hole on the side is faced towards the wind and air pressure lifts small plastic disk inside. The upper tube is tapered so that as wind speed increases more air escapes and stronger winds are needed to raise the disk. Wind speed in MPH is read from the side of the clear plastic tube. The waterproof container has instructions on use and conversion scales. Simple and robust device.Hand- held wind anemometer Instructions on use on containerbushfire, forests commission victoria (fcv) -
Surrey Hills Historical Society Collection
Book, An historical geography of Surrey Hills, 1882-1913, 1979
A thesis submitted for the Degree of Bachelor of Arts with Honours. This thesis presents in a description form, the development of Surrey Hills, an eastern suburb of Melbourne. The settlement and growth from a rural district in 1882 to a suburban centre in 1913.This thesis presents in a description form, the development of Surrey Hills, an eastern suburb of Melbourne. The settlement and growth from a rural district in 1882 to a suburban centre in 1913.surrey hills, geography, topography, j. knipe, land use, population -
Surrey Hills Historical Society Collection
Book, An historical geography of Surrey Hills, 1882-1913, 1979
A thesis submitted for the Degree of Bachelor of Arts with Honours. This thesis presents in a description form, the development of Surrey Hills, an eastern suburb of Melbourne. The settlement and growth from a rural district in 1882 to a suburban centre in 1913.This thesis presents in a description form, the development of Surrey Hills. The settlement and growth from a rural district in 1882 to a suburban centre in 1913.surrey hills, geography, topography, j. knipe, land use, population -
Lakes Entrance Historical Society
Photograph - Lakes Entrance, 1997
Date made 7 July 1997Colour photograph being an aerial view of the western end of Cunninghame Arm, showing the entrance between the hummocks, Bullock Island, entrance to North Arm, Snake Island surrounded by sand build-up. Lakes Entrance Victoriatopography, waterways, aerial photograph, boats and boating, township, islands -
Forests Commission Retired Personnel Association (FCRPA)
Thermo-hygrograph
Bushfire behaviour is influenced by many factors including temperature, relative humidity (RH), forest type, fuel quantity and fuel dryness, topography and even slope. Wind has a dominant effect on the Rate of Spread (ROS), as well as fire size, shape and direction. Temperature and relative humidity have major impacts on fuel dryness and therefore upon the availability of fuel for combustion. A thermo-hygrograph measures and records both temperature and humidity. It produces a continuous record by drawing ink traces on a paper chart held in revolving cylinder. Humidity is measured by shortening or lengthening of a bundle of specially treated human hair. Temperature is measured by means of a laminated bi-metal strip of temperature-sensitive metals which bend differentially with temperature change. The recording drum is driven by clockwork which may be geared for rotation intervals of daily, weekly or monthly periods. This particular instrument is a seven-day recorder. Serial number 10186 which probably dates from about 1960. The chart indicates it was last used in March 1979.Used for bushfire research.Clockwork Thermo-hygrographCasella London 10186 Made in England Research Branch. Forests Commission Orbostbushfire, forests commission victoria (fcv), forest measurement -
Federation University Historical Collection
Book, Memoirs of the Geological Survey of Victoria No 14 The Ballarat Goldfields, 1923, 1923
William Baragwanath was educated at the Ballarat School of Mines, obtaining a Geology Certificate in 1911. After further study he went on the become Secretary for Mines, and Chief Mining Surveyor. Baragwanath was a Councillor of the Ballarat School of Mine from 1916 to 1950.Pink covered foolscap book of 257 pages and 32 maps and plans by William Baragwanath. Contents include topography, physiography, historical, geology, basalt, faults, dykes, minerals leads, alluvial mines, nuggets, structure of Ballarat West goldfields, structure of Ballarat East gold-field, quartz formation, indicators, defunct mines, existing mines, table of deepest shafts. Images include: section of the Ballarat Gold-Field, Dead HOrse Flat, lakes formed by Basalt Flows, Gong Gong Creek, Frenchman's Lead, Ballarat West Mines, LEases and positions of shafts (1857), puddling, White Horse Lead, Woah Hawp Canton, Ballarat Township mines, Sebastopol, syncline, Victoria United Line, First Chance Mine, Llanberris No 1 Mine, Saddle Reef, New Normanby Mine, Woah Hawp Canton Mine, South Star Mine, Sebastopol Plateau, south Woah Hawp Mine, Woah No. 2 Minegeology, geological survey no 14, ballarat, baragwanath, william baragwanath -
Surrey Hills Historical Society Collection
Photograph, Boys who later joined the 1st Surrey Hills scout troop, 1909
1st Surrey Hills was the 3rd troop formed in Victoria. Harrison Buchanan was not old enough to join and for a time was the 'troop mascot' as the cubs had not been formed at this time. He later became the troop's 2nd Scoutmaster. Doug Jeffries lived at 12 Vincent Street. Alex Lucas was the son of the draper in Canterbury Road. Our documentation variously gives the date as 1901 or 1909.Six boys are pictured against a backdrop of scrub in the eroded creek bed, called 'The Alps', of Back Creek opposite Wattle Park. Three of them are identified as: Harrison Buchanan (with the stave), Doug Jeffries on the LHS and Alex Lucas next to him.Black and white photo measuring L 24.5 cm x H 17.4 cmback creek, 1st surrey hills scout troop, scouts, harrison buchanan, alex lucas, doug jeffries, childhood and youth, topography -
Puffing Billy Railway
Axle Box Cover - Tasmanian Main Line Co, 1874
Axle box cover from a Tasmanian Main Line Railway rail vehicle from 1874 The Tasmanian Main Line Railway Company (T.M.R.L.) was a privately owned railway company that existed in Tasmania from 1872 to 1890. The company were the first operators of rail services between Hobart and Launceston, where it connected with the Launceston and Western Railway (L.W.R.) It started construction of a 3' 6" gauge line between Hobart and Launceston in 1873 which was completed in December 1875. and was officially opened on 1 November 1876. The route of the railway was selected largely as a result of vocal local interests and accordingly traversed some reasonably unfavorable topography, particularly in the southern section. Because the TMLR had limited finances, the line was built to the narrow (1067 mm) gauge and included long sections of steep gradients and sharp curves. The final eighteen kilometres of the route from Western Junction to Launceston used the existing broad gauge alignment of the Launceston and Western Railway, with a third rail being laid for use by the narrow gauge trains A close but uncomfortable relationship with the Government was resolved in 1890 with the purchase of the company's assets by the Crown and their incorporation into the Tasmanian Government Railways on 1 October 1890. Historic early Tasmanian Main Line Railway - Vehicle Axel Box cover Axle box cover from a Tasmanian Main Line rail vehicle from 1874.T.M.L.R - 1874 -axle, tasmanian main line railway, axle box, tasmania, main line, -
Eltham District Historical Society Inc
Photograph, Peter Pidgeon, Heritage Excursion: Woodridge Wander, 6 March 2021
The Woodridge Estate was a major residential subdivision that was developed in many stages in the 1970s and 80s. It extended easterly from the older residential area of Eltham into what had previously been largely privately owned bushland. The subdivision design took into account the steep topography and resulted in large blocks that enabled preservation of much of the tree cover. It included a number of small parks and walkways and the one kilometre long Woodridge Linear Park. A bushland area left as a proposed school site later became the Pauline Toner Butterfly Reserve for preservation of the rare Eltham Copper Butterfly. This walk explores some Woodridge streets as well as the linear park and butterfly reserve, a hilly walk of about 3 km and includes some moderately rough tracks. Permission to visit the external grounds of two private properties to view heritage listed houses not visible from the street was granted. The walk commenced at 2pm at the access to Woodridge Linear Park in Grove Street just east of the Eltham East Primary School (Melway ref 22 B4). This free walk was open to the general public as well as Society members. Whilst COVID restrictions did not require the wearing of masks in the open, masks had to be carried and all attendees registered with name and contct number.Born Digital (41 images)covid-19, eltham, eltham district historical society, heritage excursion, woodridge estate -
Department of Energy, Environment and Climate Action
Relative Humidity Meter
Bushfire behaviour is influenced by many factors including temperature, relative humidity (RH), forest type, fuel quantity and fuel dryness, topography and even slope. Wind has a dominant effect on the Rate of Spread (ROS), as well as fire size, shape and direction. Temperature and relative humidity have major impacts on fuel dryness and therefore upon the availability of fuel for combustion. The amount of fine fuel available can increase rapidly from nearly zero when fuel moisture content is more than 16% after rain or a heavy morning dew, to many tonnes per hectare as fuel dries out later in the day and the moisture content drops below 9%. This explosive escalation in the amount of available fuel can happen over a few hours on hot and windy days. This device is used for determining air temperature and relative humidity. It contains two thermometers, one of which is covered with a wick saturated with ambient temperature liquid water. These two thermometers are called dry bulb and wet bulb. Once the thermometers to reach equilibrium temperatures the two thermometers are quickly read. The figures are then used to convert the dry bulb temperature TDB and the wet bulb temperature TWB into humidity information. The wet bulb temperature is approximately equal to the adiabatic saturation temperature. Relative humidity meter in wooden box two stainless steel tubes contain wet and dry thermometers A small clock drives a fan motor in the base to circulate airforests commission victoria (fcv), weather, bushfire -
Eltham District Historical Society Inc
Book - Map, Land Conservation Council, Melbourne Study Area Report, [December 1973]
The Melbourne Study Report is a series of volumes describing the physical nature of the land and its environment, examines the likely forms of land use, and assesses the hazards associated with these uses. This is Volume 2 (coloured maps). The first page featues a black and white map described as "Shire of Diamond Valley" with public land marked in yellow. Followed by eight large fold out maps. Melbourne Study Area Public land and descriptive blocks, Population description, Geology, Physiography, topography and rainfall, vegetation and water supply. The Land Conservation Act 1970 established the Land Conservation Council whose functions is to "carry out investigations and make recommendations to the Minister with respect to the use of public land in order to provide for the balanced use of land in Victoria. This report sets out to describe and assess the natural resources of the public lands in the Melbourne area and provides a factual basis on which members of the community may base submissions to the [Land Conservation] Council of Victoria.A collection of eight large fold out coloured maps published in a bound book formnon-fictionThe Melbourne Study Report is a series of volumes describing the physical nature of the land and its environment, examines the likely forms of land use, and assesses the hazards associated with these uses. This is Volume 2 (coloured maps). The first page featues a black and white map described as "Shire of Diamond Valley" with public land marked in yellow. Followed by eight large fold out maps. Melbourne Study Area Public land and descriptive blocks, Population description, Geology, Physiography, topography and rainfall, vegetation and water supply. The Land Conservation Act 1970 established the Land Conservation Council whose functions is to "carry out investigations and make recommendations to the Minister with respect to the use of public land in order to provide for the balanced use of land in Victoria. This report sets out to describe and assess the natural resources of the public lands in the Melbourne area and provides a factual basis on which members of the community may base submissions to the [Land Conservation] Council of Victoria. maps, shire of diamond valley, population, geology, topography, rainfall, vegetation, water supply, land use, public lands -
Phillip Island and District Historical Society Inc.
Photograph
One of a collection of over 400 photographs in an album commenced in 1960 and presented to the Phillip Island & Westernport Historical Society by the Shire of Phillip IslandPhotograph of cross sectional profile sketches of Phillip Island in eight different aspects drawn by Dr G Baker CSIRO University of Melbournelocal history, photography, phillip island profiles, black & white photograph, geography, topography, sketches, dr g baker, john jenner, bryant west -
Kew Historical Society Inc
Plan, Melbourne & Metropolitan Board of Works : Contour Plan of Melbourne & Suburbs : Melbourne Sewage, 1894
The Melbourne and Metropolitan Board of Works (MMBW) plans were produced from the 1890s to the 1950s. They were crucial to the design and development of Melbourne's sewerage and drainage system. This plan forms part of a large group of MMBW plans and maps that was donated to the Society by the Mr Poulter, City Engineer of the City of Kew in 1989. Within this collection, thirty-five hand-coloured plans, backed with linen, are of statewide significance as they include annotations that provide details of construction materials used in buildings in the first decade of the 20th century as well as additional information about land ownership and usage. The copies in the Public Record Office Victoria and the State Library of Victoria are monochrome versions which do not denote building materials so that the maps in this collection are invaluable and unique tools for researchers and heritage consultants. A number of the plans are not held in the collection of the State Library of Victoria so they have the additional attribute of rarity.Digital copy of an original MMBW plan. This contour plan shows the area identified by the MMBW for purposes of drainage and sewerage in 1894. The suburbs represented extend from Williamstown in the west to Bulleen in the east, and from Preston in the north, south to Sandringham. Suburbs are outlined in coloured ink. Red lines indicate main and branch sewers in existence at the beginning of 1894 in central and inner Melbourne. These extended as far as Williamstown and Brighton, but not yet as far as Kew, where sewering did not commence until 1901. Contour lines show the topography, which was important for indicating the fall of the land for the laying of sewers and drainage channels. Kew appears to be fairly undeveloped at this date except for railway lines and stations (the Kew and Outer Circle lines), main roads, the Kew Lunatic Asylum Reserve and Studley Park. However, the contour plan does not accurately represent the density of settlement, nor the large number of houses, which were being built in Kew and other suburbs from the 1850s to the land boom of the late 1880’s and early 1890’s. This plan is part of a large and historically significant group of MMBW plans and maps that was donated to the Society by the Mr Poulter, City Engineer of the City of Kew in 1989.mmbw contour plan of melbourne and suburbs, melbourne and metropolitan board of works, melbourne sewage, cartography -
Phillip Island and District Historical Society Inc.
Photograph, Bryant West, Approx. 1925
One of a collection of over 400 photographs in an album commenced in 1960 and presented to the Phillip Island & Westernport Historical Society by the Shire of Phillip IslandPhotograph of Sandy Island near Lady Nelson Point about 1925. It has since disappeared beneath the waves.local history, photography, photographs, topography, island, black & white photograph, coast line, islands, sandy island rhyll, john jenner, bryant west -
Surrey Hills Historical Society Collection
Photograph, Back Creek (later South Surrey Park), c 1936, 1936
This photo was taken at the opening of the footbridge by Sir Winston Dugan in 1936.South Surrey Park was developed on land which had been the property of the Kleinert family. Their land extended from Union Road to Essex Road. They ran horses, ducks and fowls and Emily Kleinert grew flowers. Alan Holt research: Lot 6 was sold to Martin Klienert by Karl Richter in 1860 together with a portion of another adjacent lot. From 1860-1885 Martin worked it as a market garden leasing some land for grazing when it was not required for gardening. He died in 1898. In a formal document, William declared he was the son of Martin "who purchased land in 1860, died in 1898 and the land has been continually occupied by father and family since. It has been cultivated as a market garden; when not being used for gardening it was let for cultivation and grazing." William died in 1939 and the property passed to his sons Martin and Ernest. The family sold the land to the Camberwell Council in the 1950s.This photo is significant as it shows the transition from rural to urban land use in Surrey Hills.Black and white photo taken in the area later known as South Surrey Park. Back Creek is in the foreground. There is a tent on the LHS and approximately 7 houses which front Verdun Street. Some of their backyards face onto the open space along the creek bed.parks and reserves, creeks, south surrey park, civic occasion, official events, back creek, verdun street, 1936, kleinert family, sir winston dugan, topography -
Surrey Hills Historical Society Collection
Photograph, Back Creek (later South Surrey Park), c 1936, 1936
This photo was taken at the opening of the footbridge by Sir Winston Dugan in 1936.South Surrey Park was developed on land which had been the property of the Kleinert family. Their land extended from Union Road to Essex Road. They ran horses, ducks and fowls and Emily Kleinert grew flowers. Alan Holt research: Lot 6 was sold to Martin Klienert by Karl Richter in 1860 together with a portion of another adjacent lot. From 1860-1885 Martin worked it as a market garden leasing some land for grazing when it was not required for gardening. He died in 1898. In a formal document, William declared he was the son of Martin "who purchased land in 1860, died in 1898 and the land has been continually occupied by father and family since. It has been cultivated as a market garden; when not being used for gardening it was let for cultivation and grazing." William died in 1939 and the property passed to his sons Martin and Ernest. The family sold the land to the Camberwell Council in the 1950s.This photo is significant as it shows the transition from rural to urban land use in Surrey Hills.Black and white photo taken in the area later known as South Surrey Park. Back Creek is in the foreground. There is a tent on the LHS and approximately 7 houses which front Verdun Street. Some of their backyards face onto the open space along the creek bed.parks and reserves, creeks, south surrey park, civic occasion, official events, back creek, verdun street, 1936, kleinert family, sir winston dugan, topography -
Phillip Island and District Historical Society Inc.
Photograph
One of a collection of over 400 photographs in an album commenced in 1960 and presented to the Phillip Island & Westernport Historical Society by the Shire of Phillip IslandPhotograph of a sketch of the geological section from Pyramid Rock to Cowes - drawn by Dr G Baker, CSIRO, University of Melbourne.Geological section from Pyramid Rock to Coweslocal history, photography, geological section across phillip island, black & white photograph, geography, topography, cowes, pyramid rock, sketches, dr g baker, john jenner, bryant west -
Bendigo Historical Society Inc.
Map - Three Road Maps of Bendigo, 1962
George Robert Broadbent (1863-1947), cyclist and map publisher, was born on 3 November 1863 at Ashby near Geelong, Victoria, son of George Adam Broadbent, Lancashire-born draper, and his wife Elizabeth, née Ruffhead. When the family moved to North Melbourne Broadbent attended the Errol Street school, followed his father's trade, and became an early cycling and cycle-racing enthusiast. At various times Broadbent held most Victorian and Australian road records, and two of his performances on solid tyres—203 miles (327 km) in 24 hours on a penny farthing, and 100 miles (161 km) in 6 hours 20 minutes on a 'safety' bicycle—were never bettered. He established records for all distances between 130 and 220 miles (209 and 354 km), and for all times between 8 and 12 hours, at the Exhibition Grounds track in May 1894, and road records for 50 and 100 miles (80 and 161 km) in October 1896. The Australian Cyclist acknowledged him 'the finest road rider that Australia has ever produced'. A foundation councillor of the League of Victorian Wheelmen in October 1893, Broadbent contested the first Warrnambool-Melbourne race in 1895, and was active in the Good Roads Movement. Next year he issued a road map of Victoria, 'prepared … after some sixteen years riding and touring in all parts of the Colony', which indicated general topography, distances, and roads classified as 'good', 'fair' or 'ridden with difficulty'. It was to become Victoria's standard map, and the basis of a continuous publishing programme by Broadbent's Official Road Guides Co.Three Road Maps of Bendigo, Bendigo and Suburbs, Bendigo and Eaglehawk. Two fold out maps printed in colour and produced by Broadbent's Road Maps Pty. Ltd. 475 Collins Street Melbourne. One map printed by Bolton's Bendigo.history, bolton's, bendio broadbent maps -
Forests Commission Retired Personnel Association (FCRPA)
Sling Psychrometer
Bushfire behaviour is influenced by many factors including temperature, relative humidity (RH), forest type, fuel quantity and fuel dryness, topography and even slope. Wind has a dominant effect on the Rate of Spread (ROS), as well as fire size, shape and direction. Temperature and relative humidity have major impacts on fuel dryness and therefore upon the availability of fuel for combustion. The amount of fine fuel available can increase rapidly from nearly zero when fuel moisture content is more than 16% after rain or a heavy morning dew, to many tonnes per hectare as fuel dries out later in the day and the moisture content drops below 9%. This explosive escalation in the amount of available fuel can happen over a few hours on hot and windy days. A sling psychrometer is a simple device for determining air temperature and relative humidity. It contains two thermometers, one of which is covered with a wick saturated with ambient temperature liquid water. These two thermometers are called dry bulb and wet bulb. When the sling psychrometer is spun rapidly in the air, the evaporation of the water from the wick causes the wet bulb thermometer to read lower than the dry bulb thermometer. After the psychrometer has been spun long enough for the thermometers to reach equilibrium temperatures, the unit is stopped, and the two thermometers are quickly read. A psychrometric scale on the side of the instrument is then used to convert the dry bulb temperature TDB and the wet bulb temperature TWB into humidity information. The wet bulb temperature is approximately equal to the adiabatic saturation temperature. The thermometers fold back into the plastic handle when not in use. Used to measure temperature and relative humiditySling PsychrometerBACHARACH INSTRUMENTS - Pittsburg PAbushfire, forests commission victoria (fcv)