The Draper Expert 50mm - 75mm External Micrometer extends your measuring capability into the larger component range, perfect for checking bigger shafts, pipes, and machined parts. This size range is essential for workshops handling medium to large engineering projects where precision remains critical. Built to professional standards, this micrometer features an enamelled frame with heat-insulated plates to prevent thermal distortion during measurement. The satin chrome thimble and sleeve deliver smooth, precise adjustment through the measuring range, whilst the 0.01mm graduations provide the accuracy demanded by quality-conscious engineers and machinists. Durable carbide-tipped anvils maintain measurement accuracy over thousands of operations, and the lock mechanism secures readings reliably. The ratchet stop ensures you apply consistent pressure every time, eliminating a common source of measurement error. Complete with calibration rod and C spanner in a protective plastic storage cas