This non-commercial website was a 60th birthday present from Ros. The name stems from another family member - our daughter Siân. As a teenager she often told her friends: “My Dad? Oh, he collects expensive sticks of wood!”
When the latest PC/tablet is out-of-date in 6 months it may come as a surprise that the Englishman in the image, the Rev. William Oughtred (1575-1660), invented a calculator around 1621 that would be in continual daily use for nigh on the next 400 years. My hobby is collecting and writing about this analogue calculating wonder - the SLIDE RULE.
This site is a virtual “display cabinet” for my collection (as it gets uploaded) of
slide rules and the odd mechanical calculating aid plus a “bookshelf” for my published articles - enjoy browsing.
Anyone needing a “memory jogger” or is just intrigued how such analogue calculators of the past worked, the International Slide Rule Museum has a richly illustrated “How to use …” guide. Afterwards try doing a few trial calculations with Derek Ross’ online simulation of a Pickett N909-ES slide rule. Thinking of starting your own collection? Then the Oughtred Society’s Beginner’s Guide to Collecting Slide Rules is the place to start.
Educators looking for maths related inspiration & teaching aids/material need look no further than Nicola Marras’ website. But if just looking for reference books on slide rules try one of these: MyList 1 or MyList 2 .
Ace Hoffman has developed an awesome simulation of a linear, round, concentric and drum slide rule. From the Homepage download a function-rich version for your phone, table or desktop.
Well the website has. Service from the old provider went downhill. So have now switched to a premium webhoster with extra security.
Please let me know if you spot anything not working.
It is a mouthful but from 1930-1952 the German commission Ausschuss fuer Wirtschaftliche Fertigung produced an impressive series of specialist but practical slide rules.
In memory of long-scale expert Ed Chamberlain (†18-10-2017) fellow collector Otto van Poelje has reissued his out of print private 2013 publication: “LONG-SCALE SLIDE RULES in LIFE-SIZE IMAGES”
Site remodelled & restyled to make it “technology neutral”. It should display optimally on any type of h/w device (incl. tablets & smartphones) or browser. Also the restyled search options work faster & more intuitive.
Please tell me what you think ....
Lawrence made the only known slide rule conceived so vital to the WWII effort that the UK & US governments had it classified - based on research from MIT it calculated radar antenna beam patterns, beam width, gain, etc.
The UKSRC Slide Rule Gazette was the guest publication on British television’s highly acclaimed weekly satirical comical news quizz HIGNFY - see the You Tube clip.
|A.W. Faber-Castell||4/60, 4/92, 8/13, 8/14, 8/15 & 8/168|
|Alro||Cobol Analyser, Ha Tex & Truck Tyres|
|Dargue Brothers Ltd / Simplon||Sub-Ivory models SR-1/3/4/6 + Honduras models SD10/WR-2A/W-5/W-7|
|Engineering Instruments Inc.||Either circular “vinylite” model|
|Fearns Calculators||Barber Shop Harmony Calculator|
|Fowler||Nautical, Twelve-Ten, Kearns & Mackay|
|Graphoplex||6245 & 6250|
|Inglis||FLASH: Pricing, Photographic Exposure, Stock Exchange, Foreign Money, Paper Trades & Health Insurance|
|L&C Hardtmuth / Classic||10" Series III|
|Lawrence Engineering Services||S-M (C.V. Ore) & Exposure (MIT)|
|Nestler||Cursor (runner) for 342 (50cm) & 24b (100cm)|
|Slide Rule & Scale Engineering Co. (S.E.&S.E.)||- any -|
|Unique||Norman, Perfectus, Dial, Pioneer Long Scale & Junior|