15505. General rating sheet for employee on capacity for future growth and aptitude for leadership. Collection: Early 20th Century Engineering Lantern Slides Set: Job rating Date: undated Format: Image Agent: unknown
15506. Job description for a boring mill operator Collection: Early 20th Century Engineering Lantern Slides Set: Job rating Date: undated Format: Image Agent: unknown
15507. Mill-worker operating circular saw to cut super-chargers for airplane engines at Packard Motor Company. Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
15508. Close up of electronic milling tool cutting a bracket for an airplane propeller in Chicago Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Location: Chicago, Illinois Date: undated Format: Image Agent: unknown
15509. Examples of screws, studs, and knobs made by the automatic screw machine Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
15510. Gear hob from the Barber Coleman Company Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Location: Rockford, Illinois Date: undated Format: Image Agent: unknown
15511. Gridley multiple spindle automatic machine Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
15512. First milling machine, Eli Whitney, 1818 Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: 1818 Format: Image Agent: unknown
15513. Revolving vertical turrets machining parts in assembly line Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
15514. Multiple spindle vertical lathe Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
15515. Men in automobile measuring acceleration with a pousometer. Collection: Early 20th Century Engineering Lantern Slides Set: Growth Date: undated Format: Image Agent: unknown
15516. Hele-Shaw variable stroke pump engine Collection: Early 20th Century Engineering Lantern Slides Set: Cramer's Date: undated Format: Image Agent: unknown
