F.138 Data Sheet MJS-p-0415

Hemmi, 269, 1969

Serial Number or Date Stamp: TB

Country: JPN Primary construction material: bb Case included?: yes

General Description: Specialty linear stadia slide rule

Length of 1 decade = 10 in, and overall scale length = 10 in. The largest physical dimension is 10 in.

Front Scales: L F K A [ B K’ CI C ] D LL3 LL2 LL1

Back Scales: CL SL M TL [ R ST T S C ] D DI SC1 SC2 _ CC

Notes: Civil engineering rule; beautiful specimen hardly used if at all; stadia scales and scales for designing curves for road and railroads; 4-decade scale for flow in open channels; excellent engineering slide rule

References: http://www.sliderules.info/collection/10inch/080/1086-hemmi-269.htm

Date Acquired: 04/15/2026