External micrometer with tungsten carbide tipped anvils, enamel frame with lightweight workshop design, The thimble and sleeve have a satin chrome finish. Supplied in a sturdy plastic case and suitable for all external measurements in either workshop or inspection departments.

103 131: Ratchet Graduation: 0.0001in. 103 129: Ratchet Graduation: 0.001mm. 103 137: Ratchet Graduation: 0.01mm. 103 138: Ratchet Gradation: 0.01mm.