The Faithfull 150mm (6 inch) Inside Spring Caliper provides extended reach for larger internal measuring requirements in professional workshop environments. This size is particularly suited to measuring internal diameters of larger pipes, cylinders, bores, and machined components where standard smaller calipers cannot reach. Featuring polished, natural steel finish legs manufactured from flat stock, this caliper is carefully balanced to maintain stability even at its extended length. The treated points guarantee lasting precision, whilst the strong but flexible bow spring ensures consistent tension across the full range of adjustment. The centrally located adjustment screw delivers smooth and precise action, allowing for accurate fine-tuning of measurements. Ideal for mechanical engineering, fabrication workshops, and maintenance applications where larger internal dimensions need to be measured with precision and reliability. Features and Benefits:150mm (6 inch) capacity for larger