| Time Period Manufactured | 1930-Now |
|---|---|
| Country/Region of Manufacture | United States |
| Modified Item | No |
Check the listing for details. 1939 Allen Engineering Scales drafting rulers and protective case. Condition: New. Listed at 48.00 USD. It enables the draftsman or land man to scale off each unit directly, without the use of a conversion table or calculating machine. Sold only in complete sets. Never used. Individual leaves.