The Fuller cylindrical slide rule, is a cylindrical slide rule with a helical main scale taking 50 turns around the cylinder. This creates an instrument of considerable precision – it is equivalent to a traditional slide rule 25.40 metres (1,000 inches) long. It was invented in 1878 by George Fuller, professor of engineering at Queen's University Belfast, and despite its size and price it remained on the market for nearly a century because it outperformed nearly all other slide rules. He patented it in Britain in 1878, described it in a journal in 1879 and in that year he also patented it the United States, depositing a patent model. As with other slide rules, the Fuller is limited to calculations based on multiplication and division with additional scales allowing for trigonometrical and exponential functions. The mechanical calculators produced in the same era were generally restricted to addition and subtraction with only advanced versions, like the Arithmometer, able to multiply and divide. Even these advanced machines could not perform trigonometry or exponentiation and they were bigger, heavier and much more expensive than the Fuller. In the mid-twentieth century the handheld Curta mechanical calculator became available which also competed in convenience and price. However, for scientific calculations the Fuller remained viable until 1973 when it was made obsolete by the HP-35 handheld scientific electronic calculator. Fuller's calculators were manufactured by the scientific instrument maker W.F. Stanley & Co. of London who made nearly 14,000 between 1878 and 1973.Like all slide rules, logarithmic scales are used to facilitate calculations more quickly and efficiently. The spiral logarithmic scale greatly increases the precision and computing power of the slide rule. In addition, its tables provide useful information to its users, most likely engineers. Its remarkable length permitted a high level of precision in calculations; calculations could be made to 4 or 5 significant digitsThe fuller calculator, is a cylindrical slide rule with a helical main scale taking 50 turns around the cylinder. There is a papier-mache cylinder fastened to a mahogany handle. A second papier-mache cylinder is a slide fit over the first. Both cylinders are covered in paper varnished with shellac. A brass pointer with an engraved index marker at its tip is attached to the handle and a second brass pointer is attached to the top cap. On the outer cylinder is a helical logarithmic scale 500" (41'8" or about 12.5 m) in length. This cylinder can be slid and rotated upon the inner one and hence with the correct sequence of movements, multiplications and divisions can be made and the answers read off the two pointers which project over the cylindrical scale.FULLER CALCULATOR inscribed on brass pointerscientific instrument, mathematics, calculating

Used before the invention of electronic calculators, mechanical adding machines were most often used for long calculations. This calculator was used in the Ballarat School of Mines Physics Department. Addition and subtraction were perfomed by turning the larger side mounted crank forward or backward. the smaller crank lever zeros the two registers. Two buttons are provided to set the machine either to clear the number entry with each revolution of the crank or to repeat the entry. The largest button resets the keybord to all 0s.A calculator with shiftable carriage and digit separator rods between each row of keys.ballarat school of mines, calculator

The firm of "Carlsen Brothers" from Gentoft in Denmark built two interesting and innovative lines of mechanical calculators under the "Contex" brand name.Contex Adding machine, In grey/blue/cream plastic with 48 digits and 9 results window. Comes in brown embossed vinyl wooden case with hinges, and lined with red felt. Leatherette.CONTEX Serial no. 411017021adding machines, calculators

Log Calculator - IRISH MKII was presented to MAJ. K HERDMAN by Intmed CSE 84/85 by way of a good humoured joke, Part of the KEVIN JOHN HERDMAN, 397661, collection. Rectangular plywood object with a variety of numbered circular holes. Printing on the front is in black.Printed on front in black: “LOG CALCULATOR, IRISH MKII. Presented to MAJ. K. Herdman by Intmed Cse 84/85 “."memorabilia, kevin john herdman

The core memory of this calculator was a #D metal box. The pin must have been attached to a card reader or keyboard to enter the programme. According to Sharp’s serial numbering scheme, which encodes the month and year of manufacture of their electronic calculators at least through the mid-1970’s, this calculator was manufactured in September 1969. The technology used in the Memorizer 30/Memorizer 60 was very typical of that of the late 1960s, with small-scale integrated circuits containing a few gates or flip-flops, and a magnetic core memory array for storing the program steps that the user keyed in using the calculator attached to the device. (with thanks to Rick Bensene, Curator of the Old Calculator Museum, Beavercreek, Oregon, USA) ISharp Memorizer 60 (Model CSA-12). The Model CSA-12, called the "Memorizer 60", was an accessory that could be connected to a Sharp Compet 22 or Compet 32 electronic calculator to allow these machines to be "learn mode" programmed. Programs were "learned" from the keyboard of the calculator, and stored within a core memory array in the Memorizer 60. Programs of up to 60 steps could be stored. The Memorizer 60 could them "play back" the stored steps at high speed, to allow relatively complex math operations to be performed. (http://www.oldcalculatormuseum.com/m-sharpcsa12.html)Serial No. 910 106 09Bcalculator, memorizer 60, computers, programmable calculator, electronic calculators

Comptometers, first made in 1887, were the first key-driven mechanical calculators. The keys when pressed allow for rapid addition, subtraction, multiplication, and division that immediately add to a total. They remained a staple in business offices for high-speed calculation until the 1960s. This comptometer was used in the office of the Newport Timber Company Limited, which survived as a locally owned and managed business for over 100 years. It was located on the corner Paine and Latrobe streets, Newport.Large, heavy key driven mechanical calculator with a detachable leatherette dust cover.On top: "Felt & Tarrant Manufacturing Co. Chicago U.S.A. Comptometer" On panel underneath: "Comptometer Registered Trade Mark/Made in United States of America by Felt & Tarrant Manufacturing Company Chicago Illinois"

First programmable calculator used by Thompsons Castlemaine Ltd..1) Hewlett Packard programmable calculator model HP9100A. Cream coloured metal housing. Four segment keyboard with keys coloured grey, cream and fawn. .2) Selection of 10 diagnostic cards for above in a plastic case with a clear plastic hinged push back lid..1) Serial number on rear plate "816-00508". .2) Cards part number 5060-5919.engineering, programmable calculator

Slide rules were commonly used prior to the invention of the calculator. The Slide rule was used for performing multiplication, division and other scientific functions up through the 1960s and prior to the development of the electronic calculator. Used by Frank Smythe, engineer. Used up to the 1960's prior to the invention of the electronic calculator. Metal rule, hard cardboard case. The slide rule consists of two divided scales, one fixed and one movable, and a sliding window called a cursor. The Slide rule was used for performing multiplication, division and other scientific functions up through the 1960s and the development of the electronic calculator. System Darmstadt dmake, sun Hemm, Japan. "F. SMYTH" is annotated on the slide rule cover. slide rule, circa 1950 slide rule, trade measurements and calculations slide rule

Kathryn Knitwear, founded by Robert Blake, manufactured high quality children’s knitwear in Melbourne from the 1940s – 1980s. Robert Blake began manufacturing children’s knitwear in his bedroom in Strathmore using a hand powered machine in the late 1940s. The operation moved to Ascot Vale and Essendon, before eventually establishing a factory in Moonee Ponds in the early 1950s. The business continued to expand, necessitating a move to a new factory in Broadmeadows. By 1962, the Broadmeadows factory was producing an average of 20,000 garments per month, which increased to 24,000 by 1964. Robert Blake’s Son, Brendan recalls that “The Kathryn brand was famous around Australia, anywhere children needed to keep warm and dress smartly. It also won a number of wool fashion awards”, including the 1969 Wool Awards, which was held by the Australian Wool Bureau and published in Women’s Weekly. The Kathryn range was designed for durability, comfort and care, without sacrificing style. They used patterning techniques that increase stretchiness, comfort and fit, as well as integrating decorative elements into the fabric to prevent them from being bulky, uncomfortable or tight. Making longevity of style a priority, Brendan Blake remembers that “there was one particular garment that was in the range for at least thirty years”. He also recalls “In the past, when women have found out that I was associated with Kathryn Knitwear, they would often relate to me the story of a garment they had purchased or received as a gift and, when their child had grown out of it, they would hand it on to another child. Several ladies have told me of purchasing garments for their daughters’ glory box, or saving a particular garment after their daughter had grown out of it. Brendan Blake: “At the peak of their operation they employed approximately two hundred people, mainly women and girls. A family would often seek to send their daughter to work in this company because they knew they would be looked after and safe. One lady wrote to me telling me that working at the Moonee Ponds Factory prior to getting married was the happiest time of her life.” In 1963, workers at the Kathryn factory earned £13 per week, which was 8 shillings and 8 pence higher than the minimum weekly wage for female workers in the textile manufacturing industry (£12 11s 4d). By 1970, the Kathryn Knitwear brand expanded from children’s knitwear into womenswear under the brand name ‘Lady Kathryn’, and for boys and men under ‘Robert Blake’. Continuing to diversify their distribution, they also began exporting ‘Kathryn’ garments to New Zealand, the Pacific Islands, and Japan. ‘Kathryn Knitwear’ was well-known for their early adoption of modern materials and techniques that had broad appeal to their customer base. This is shown in their early use of the acrylic fibre ‘Orlon’ in the 50s and 60s and ‘Superwash’ wool in the 1970s. Many of Kathryn Knitwear’s styles, particularly those that were long running staples of the brand, were available in both wool and Orlon to suit the consumer’s preference. Far from the humble origins of one man in his bedroom with a hand-cranked machine; at its closure in 1980, the Broadmeadows factory of ‘Kathryn’ housed more than 100 machines, including 53 sewing machines and 45 knitting machines. Robert Blake was “a passionate advocate for wool and Australian Made” throughout his whole life. A strong thread that ties through the lifespan of Robert Blake and Kathryn Knitwear is a balance between adopting new innovations without sacrificing the core values of durability, comfort, care and style that had made the brand so well known. Their legacy forms an integral part of both Australian social and manufacturing history.Measuring instrument with five circular white layers and one long transparent plastic ruler on top. Transparent layer is now yellowed, was likely originally clear. All of the layers connected with a metal rivet at the centre, allowing the discs and line indicator to move in relation to each other. Discs are labelled (inside – outside) Cost per Thousand Overall Unit Hour U/S [units] produced in 1000s No. of persons Bonus Percentage 9017.2 Black leather case with white block letter printing [9017.3 - 9017.5] Inside case are three notes (one printed, two handwritten) that provide instructions for using the calculator[label on obverse of case] THE AUSTRAL UNIT CALCULATOR ISSUED BY INDUSTRIAL CONSULTANTS, MELB MADE BY MELB >W&G< AUST.business, business history, manufacturing history, calculator, textile fibres textile history

The Slide Rule was made in 1940 and used by the Royal Australian Air Force during WW2.This is an original Slide Rule that was used by RAAF during WW2Wooden Slide Rule CalculatorRule, Slide M.G. Mk III. W.H.H. 1940slide rule ww2 raaf

Colour photograph of a battery operated calculator.calculator, mathematics

SHARP PC-1001 Electronic Calculator black plastic hooded calculator with black and white, blue and red buttons and ventilation slits at the back.PC-1001 SHARP

Used by donor's parentsMetal case containing Addition calculator with pointer attached to frameAddiator patents in all countriesinstruments, general

Used by RAF during WWIIMetal calculator with rotating metal dial and slide scalewith additional rotating ial on revrseCalculateur D'Estime A.A.F. Type 40navigation computer, aircraft computer, air force course computer,