Title
Slide ruleCatalog Number
102631443Type
Physical objectDescription
Printed on one side of the ruler is "G-E or Westinghouse Photoflash Lamps".Date
1946 ca.Manufacturer
Lawrence Engineering InstrumentsPlace Manufactured
U.S.Identifying Numbers
Model number | 6-0p Flashrule | |
Other number | P173 | Donor's ID number for rule |