1956 Press Photo Ervin Grafwaller at Milwaukee Trade and Technical High School.

In a typical exercise of precision in a machine shop, this pupil checked a threading job on a lathe. Ervin Grafwaller 15, of 2954 North 60th Street, was allowed tolerances of…

Photo measures 10.5 x 9 inches.

Photo is dated 04/30/1956.

Photo back: