International Workshop AN

Bart Depuydt's strange Hemmi slide rule

J. Hemmi “Sun” Model 82 Pocket

Click images for magnification

Bart's Hemmi
Bart's Hemmi

ISRM Hemmi
ISRM's Hemmi

Data:

  • Length 150 mm
  • Probably used by an English schoolkid
  • According to the ISRM 21.11.24.01: made between 1914 and 1929

Question:

  1. Why do the slots on the back differ from all Hemmi's shown in the ISRM?
    The ISRM item Sun (Hemmi) Model 1 (British Export version) looks similar Andries de Man
    The closed windows are not necessarily for English imports. Peter Hopp
    Is there a scale on the back of the stock? David Rance