The slide rule cursor is a magnifier. The case is labeled with the manufacturer name and the model number 1441. The object consists of the slide rule and case.
Manufacturer
Frederick Post Company
Place Manufactured
Japan
Identifying Numbers
Model number
1441
Other number
P129
Donor's ID number for rule
Dimensions
overall: 1/2 in x 5 1/8 in x 1 1/4 in; overall: 1/2 in x 4 7/8 in x 7/8 in
