Manufacturer
The L. S. Starrett CompanyNotes
No. 293A English Standard Stamp The L. S. Starrett Co. No. 293B U. S. Standard Stamp The The L.S.S.Co.
First in Catalog 23 (1924) Last in Catalog 26A (1953) Redesigned in Supplement 26A No. 293 Rolling Mill Caliper Gage.