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A. The Draper 39451 Inside Spring Calipers has a capacity of 150mm, making it suitable for a wide range of internal measurement tasks.
A. They are designed for taking comparative measurements of internal features such as bores and slots, and for transferring those dimensions to a micrometer, Vernier calliper or precision rule.
A. Adjustments are made by opening and closing the legs via an adjusting nut. A knurled wheel provides fine ground adjustment for precise, controlled settings.
A. The divider points are manufactured from high grade steel and are hardened to 50–55 HRC for increased wear resistance under repeated use.
A. In-stock orders placed before 14:30 Monday to Friday are usually dispatched the same day.
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