Potter's Test Piece ... AMS Horizontal (normal)
Potter's test piece ... Jeff Vanderpool ... Well L 11:1. Horizontal (normal) ... 20 Apr 2021
Potter's Test Piece ... AMS Rotate 180
Potters' debris test pieces wasters ... Anne Hooton ... Drafting Film Drafting Ink
Potter's Test Piece Fragment. Potter's Test Piece ... ΩΔ-5 859, 860 ΩΔ 492 P 32374 P 32376 ΩΔ 483 P 32365 P 32377 P 32378 P 32376 P 32377 P 32378
Potter's Test Pieces ... AMS Horizontal (normal)