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Starrett 125 6/150 Master Vernier Caliper

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Starrett 125MA 6/150 Master Vernier Caliper (metric only)

The Vernier caliper provides accurate measurements of inside diameter, outside diameter and depth by using opposing scales to provide a much finer measurement than would be possible with a simple rule.

The mm scale on the Starrett 125 is a retrograde vernier (the vernier scale is more widely spaced than the main scale) this makes it much easier to read and accurate to 0.02mm rather than the 0.20mm commonly found on direct verniers.

The method of use is exactly the same - just take the crude measurement on the main scale, then look for point where the two scales align and read off the parts of a mm on the vernier scale.

A lovely bit of 15th century technology that still serves its purpose very well.

Resolution 0.02mm (the smallest change that can be meaningfully measured).

Measuring accuracy mm +/- 0.02mm (the closeness of agreement between the result of a measurement and the true value).

The moving head is milled from a single block of steel and has angled faces to eliminate parallax error.

Supplied in a fitted, foam lined plastic case.

Metric only.

No batteries necessary!

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