Measuring instruments. From left: a metric screwpitch gauge ( millimetres), a device for measuring the thread of a screw; a micrometer screw gaug


Measuring instruments. From left: a metric screwpitch gauge ( millimetres), a device for measuring the thread of a screw; a micrometer screw gauge (0-25mm), a device for measuring very small distances; a 150mm metric rule, a device for measuring flat distances; and vernier callipers (150mm x ), a device for measuring internal and external dimensions.


Size: 4633px × 3777px
Photo credit: © SHEILA TERRY/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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