Dating hemmi slide rule

Welcome to vintage instruments: slide rules and more new and previously owned instruments of math, science, and engineering. Details on hemmi slide rules are listed in paul ross's article, a comprehensive hemmi slide rule catalog, in jos, vol 12, no1, spring 2003. This part of the hemmi catalogue raisonne lists hemmi-made slide rules for which i know no model an all-paper hemmi slide rule discovered by wataru.

Slide rules -- manuals & documentation there are sections for hemmi normal slide rules, the electro slide rule with log log scale, and the improved slide rule. This application simulating a slide rule (slipstick)the slide rule reproduces hemmi no 30 slide rule, which has a, b, c, ci, d, s, l, t scalesthis device calculate multiplication. Hemmi/post/hughes-owens date codes: after hemmi dropped the 'made in occupied japan logo in about 1951 they began placing date codes on certain rules. A private collection of drawing instruments, slide rules and mechanical calculators, as well as a few microscopes and miscellaneous items.

See more like this new 1969 sun hemmi 74 bamboo 15cm reitz slide rule + instructions leather wallet. Dating post brand slide rules including the hemmi model 159 slide rule the hemmi 159 scale arrangement had already been used during the war on the post 1462. Hemmi slide rules are easily identified dicates a slide rule made in june 1957 hemmi continued with this dating system until the end of production it.

Welcome to vintage instruments: slide rules and more this selected slide rules section offers a very nice selection of the most powerful hemmi pocket rule,. Calculating history similar slide rules have been produced by hemmi our dating method yields 1975–1978 the slide rule itself is of course of a much later. This slide rule originally had a magnifying cursor, which has been replaced with a normal cursor, unfortunately notes on dating hemmi slide rules. See resources below for a paper on the multiple complex steps which this company used to make high precision slide rules sun hemmi dating the serial numbers and. Tina's hemmi slide rules where equivalent model numbers have been included in brackets, this information was obtained from paul ross' website hemmi slide rule catalogue raisonne.

Find great deals on ebay for hemmi slide rule shop with confidence. Relay/ricoh: japan relay was established 1951 and later amalgamated with ricoh this company appears to have made a number of slide rules which carried other companies brand names. Rebuild vintage sun hemmi bamboo slide rule with leather case pocket size, total length 5 gold lettering on front: t great condition a bit of tarnish that will clean up nicely.

  • Slide rule trading co has new in box hemmi rules for sale and specializes - cleaning and care for your slide rule - slide rules on the internet.
  • Sun hemmi electrical ten inch slide rule closed frame, sun hemmi p283 ten inch open frame plastic slide rule dating from october 1970 with reversible slide.

David crate's quality used slide rules these instructions are for a hemmi slide rule designed for problems in electrical communications. Bob's sliderule site search this site here derek has put together a number of working slide rules that can be used for calculations and demonstrations on. Hemmi bambou - patent 58115 this japanese slide rule was used by my grandfather it has all basic scales plus trigonometric on reverse of slider.

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Dating hemmi slide rule
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