This 100mm (4in) Moore & Wright Spring Joint External Caliper is the compact option in the range, perfect for measuring smaller external dimensions with precision and ease. The 100mm capacity makes it particularly suitable for general workshop use, fitting work, and applications where portability and manoeuvrability are important. The bow spring mechanism ensures uniform tension across the full 100mm working range, while the centrally mounted adjustment screw allows for fine, controlled settings that are far more precise than firm joint type calipers. This combination of features makes it an excellent choice for accurate measurement of shafts, rods, and other external components. Manufactured to BS3123 standards, this caliper delivers the quality and reliability expected from Moore & Wright professional measuring tools. Supplied in retail packaging for protection and convenient storage. Features and Benefits:100mm (4in) capacity ideal for general workshop applicationsCompact size