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[subjects include: Potter and Johnson Production Tools, Pawtucket, Rhode Island, Pratt and Whitney, automatic turret lathe, 4-U, Niles-Bement-Pond Company, American Standard spindle nose]

[subjects include: automatic turrent lathe, Potter and Johnson, automatic gear hobbers, automatic spur gear cutters, tape control]

[subjects include: sales meeting, testimonial dinner for Charlie Pond and Hugh Tanner]

[subjects include: Potter and Johnson, automatic turret lathe, model 3-U, 3E-15, model 4-u, 5-D powerflex, 6Drew-40, 10-U model]

Subjects Include: ["Precision Measurement and Calibration: Electricity and Electronics"]

[subjects include: Potter and Johnson Company, Pawtucket, Rhode Island, photographs of founders, photographs of office and employees 1948, history of innovations and machines, list of Potter and Johnson machines sold between 1938 and 1948, sale price increase on Potter and Johnson machines]

[subjects include: case history number 150, 153, 154, 157, 158, automatic cut man-machine time, Potter and Johnson, automatic turret lathes]