|Slide rules HOME page||COLLECTION||5 INCH RULES|
1. This is a very ordinary rule produced by a British company, Hardmuth, probably in the early years after the second World War.
2. The "torch" was their logo.
3. The mthod of constrution appears to be similar to that of Unique, namely paper scales covered by clear plastic.
|Manufacturing date||After 1944 (date of creation of the company) and probably around 1950.|
|Material||Celluloid on wood.|
|Scales||Annamed but A,B,C and D|
|Cursor||Brass and plastic.|