Caliper is the American spelling, while calliper (double "L") is the British spelling.
A single tool might be … See more

The earliest caliper has been found in the Greek Giglio wreck near the Italian coast. The ship's find dates to the 6th century BC. The wooden piece already featured a fixed and a movable jaw. Although rare finds, calipers remained i… See more

Inside calipers are used to measure the internal size of an object.
• The upper caliper in the image (on the right) requires manual adjustment prior to fitting. Fine setting of this caliper type is performed … See more

Each of the above types of calipers has its relative merits and faults.
Vernier calipers are rugged and have long-lasting accuracy, are coolant proof, are not affected by magnetic fields, and are largely shockproof… See more

A caliper must be properly applied against the part in order to take the desired measurement. For example, when measuring the thickness of a plate, a vernier caliper must be held at right angles to the piece… See more

The method to use a vernier scale or caliper with zero error is to use the formula "actual reading = main scale + vernier scale − (zero error)". Zero error may arise due to knocks that affect the calibration at 0.00 mm when t… See more