Technology
Riken
Maker
Riken RKK Relay Bamboo Slide Rule Relay 505
Description
5 inch rule. White laminate on bamboo.
Scales: A [B, CI, C] D, K, and, on the back of the slide, [S, L, T]
Black and red, two-piece cardboard case.
Related organizations
5 inch rule. White laminate on bamboo.
Scales: A [B, CI, C] D, K, and, on the back of the slide, [S, L, T]
Black and red, two-piece cardboard case.
Maker