25. Visual perception test for applicant to identify dots that are off center in circles on a page. Collection: Early 20th Century Engineering Lantern Slides Set: Aptitude Tests Date: undated Format: Image Agent: unknown
26. Rhythm test for applicant dropping a ball into a rotating turntable. Collection: Early 20th Century Engineering Lantern Slides Set: Aptitude Tests Date: undated Format: Image Agent: unknown
27. Cartoon showing one worker timing another doing a work task. Collection: Early 20th Century Engineering Lantern Slides Set: General Date: undated Format: Image Agent: unknown
28. Cartoon showing 5 workers chained to their workstations to do a repetitive task. Collection: Early 20th Century Engineering Lantern Slides Set: Time and Motion study Date: undated Format: Image Agent: unknown
