Sun-Hemmi 4" (magnifier *1.6)
A Sun Hemmi 4" pocket slide rule with original leather case. Manufactured in Bamboo with a celluloid coating. Front scale A, B, CI, C & D. Rear scale S,L & T. Made in Occupied Japan date this to 1946 - 1952
D Scale length: 160 mm. Significant digits: 2.8 to 3.7.