L. S. Starrett Co.

The L. S. Starrett Company was founded in 1880 in Athol, Massachusetts and is still in operation.  They are a manufacturer of machinists' tools such as rules, squares, calipers, gauges and dividers.

Hasher

This is a 1864 Starrett "hasher", his first patented invention.  Photos by George O'Connor.

Much more information on L.S. Starrett is in our essay on Precision Toolmaking.

References:
Johnson, Laurence A. (December 1958). The hasher. The Chronicle.
Starrett. (July 1895). No. 13 catalogue and price list of fine mechanical tools, manufactured by L. S. Starrett Athol, Mass. U.S.A.
Starrett. The Starrett Book for Student Machinists.
Turner. The Starrett wheels that led to more wheels.
Links:
Link to the L. S. Starrett Company's website.
1898 photograph
A history of the L. S. Starrett Co. has been created by Rose Antique Tools.
Tools of the L. S. Starrett Co. in the Museum collection.