Title
Slide ruleCatalog Number
102666673Type
Physical objectDate
1948 ca.Manufacturer
Pickett & Eckel, Inc.Place Manufactured
U.S.Identifying Numbers
Model number | 500 Ortho-Phase | |
Other number | S377 | Donor's ID number for rule |
Model number | 500 Ortho-Phase | |
Other number | S377 | Donor's ID number for rule |