PRINCIPAL DIMENSIONS, REFERENCE SURFACES AND TOLERANCES

Duration: 12 min

Year Published: 1945

Creator: Office of Education (Department of Health, Education, and Welfare)

Color: B&W

Sound: Optical sound

Description: Shows the relationship between the blueprint and a rough and finished casting. Tells how to use a blueprint in selecting reference surfaces, interpret tolerances, and check the accuracy of finished work. From the MACHINE WORK SHOP series. Fundamentals of Blueprint Reading, No. 3