Hemmi model 1 bamboo slide rule with digit-registering cursor, fair condition. This is a very early Hemmi slide rule, manufactured 1928 or earlier. There are 7 scales for calculation (A, B, C, D, S, L, T), with inch and cm scales on edges. Comes with original cardboard box. Slide rule is 11 inches long and in perfect working condition, although condition of rule and box are only fair (see pictures). Slide rules with the digit-registering cursor are quite rare, and serious collectors should have one in their collections.