Faithfull Inside Spring Caliper 150mm

The Faithfull inside spring caliper has a 150mm capacity for measuring larger internal dimensions. Its polished natural steel legs are made from flat stock and balanced to maintain stability at this extended length.

The caliper has treated points, a strong but flexible bow spring for consistent tension across the adjustment range, and a centrally located screw for smooth action and fine adjustment. It is intended for internal measurements such as the diameters of larger pipes, cylinders, bores and machined components, including in mechanical engineering, fabrication and maintenance applications.