56R-Spring-Joint-Jenny-Caliper-150mm-6in-Moore-Wright-56R-p-The-Moore-amp-Wright-56R-Spring-Joint-Jenny-Caliper-is-manufactured-from-polished-tool-steel-&-the-marking-leg-has-been-hardened-to-over-550 Hv-at-the-point-It-is-fitted-with-a-bow-spring-that-ensures-uniform-tension-over-the-working-range-&-a-centrally-mounted-adjustment-screw-that-offers-finer-setting-than-firm-joint-type-p-p-Also-known-as-Hermaphrodite-calipers-p-p-Size-150mm-6in-p-Moore-Wright-56R-Spri