Slide Rule, by Pickett & Eckel, Chicago and California, 1960s?
|Inventory Number:|| 90632|
|Object Type:|| |
|Place Created:|| Chicago Illinois USA North America
|Brief Description:||Model 904-ES Trig with Decimal Keeper Speed rule devised by Lawrence J. Kamm on reverse. With leather carrying case.|
|Provenance:||Presented by Dr Lawrence Kamm.|