Horseshoe on floor mill at East Pittsburgh Works
- Horseshoe on floor mill at East Pittsburgh Works
- Caltech Photographs
- Photographs of Academic Divisions and Departments
- Astronomy (Astrophysics)
- 1938 March
- 1 photographs
- Work was done at Westinghouse Electric Plant. Note cam and switches in foreground for operating screw feed for saddle on boring bar. Astrophysics.