Object StatementPocket slide rule with case, Sun, closed frame, glass / celluloid / bamboo / metal, made by the Hemmi Bamboo Slide Rule Manufacturing Co Ltd, Japan, 1917-1929
Physical DescriptionSlide rule, closed frame, single sided, double-sided slide, beige coloured celluloid laminate nailed to bamboo body. There is a transparent glass cursor in reverse "C" shaped metal frame, with a hairline printed on it in red. Tables of decimal inch equivalents, Weight of metals, Ultimate Strength of metals and timbers on reverse.
In very well used black card case with paper label on case, case is heavily repaired with sticky tape.
Stock, upper: A
Slide: B, C
Slide, reverse: S, L, T
Stock, lower: D
5inch ruler on upper bevelled edge,15cm ruler on lower squared edge
MarksManufacturer's mark and model number on cursor, embossed, on top ' SUN ', on bottom ' No. 58115 '. Patent numbers on slide rule stock, on bottom, printed in black ' Hemmi Sun Patent No. 22129. British Patent 107562, Brevette S.G.D.C. Made in Japan '. White paper label on reverse, handwritten in black pen ' Bromely 1980-99 '. Scratch on bottom ' W F C O X '.
Manufacturer's mark on card case, on left side, printed on paper label in red and black ' Sun / Hemmi's Bamboo Slide Rule / Tokyo, Japan / Established 1895 '. (partley illegibility)