| ROUGH GRINDING WITH PIN BAR |
|
681.4 |
2R; 16-sd-$26.47; rent $1 |
|
|
|
| Rough Grinding |
1944 |
U S Office Of Education |
26 min |
16mm |
B&W |
sound |
| POLISHING—SPHERICAL SURFACES |
1945 |
Castle Films |
28 min |
16mm |
|
Sound |
| FINE GRINDING |
1943 |
Castle Films |
15 min |
16mm |
|
Sound |
| CENTERING, EDGE GRINDING AND BEVELING |
1944 |
Office of Education (Department of Health, Education, and Welfare) |
27 min |
16mm |
B&W |
Optical sound |