Caliper reading 23.45 mm

An example figure from the Length Reading Generator.

A caliper holding a block, reading 23.45 mm on its 0.05 mm sliding scale, with a close-up strip of its scales — A 150 mm caliper with a block held between its outside jaws. The close-up strip below it shows the sliding scale’s zero just past 23 mm on the main scale, and its 9th mark, between the 4 and the 5, lined up with a main-scale mark: 23 + 9 × 0.05 = 23.45 mm. The least count, 0.05 mm, is printed on the slider.

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Answer key

Reading: main scale 23 mm + sliding scale mark 9 × 0.05 mm = 23.45 mm

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