Starrett 243 Firm-Joint Hermaphrodite Calipers feature a round, adjustable leg and an improved firm-joint, allowing joint adjustability at any tension. Also includes offset leg with an adjustable point. Starrett Hermaphrodite Calipers are used in layout work for locating and testing centers, laying off distances from an edge, and more. Machinists and Toolmakers have a wide selection from which to choose. Caliper size and capacity is 6". Firm-Joint, 6" (150mm).