Precision outside micrometer-- well balanced thimble diameter with distinct figures for easy reading. Mitutoyo 115-215 (0.01mm) Spherical Anvil/Spindle Tube Micrometer 0-25mm - DML Machinist Micrometer Screw Gauge Micrometer, Industrial Grade High Precision Outside Micrometer 0-25MM Spiral Micrometer Caliper Measuring Tool(75-100MM(Industrial Type External Micrometer Attachment Well balanced thimble diameter with distinct figures for easy reading. - Great for machinists and jewelers for making precise measurement. - Made of material... Spiral micrometer-- insulation frame design, single hand measurement to ensure the real-time measurement data of the . Precision outside micrometer:large numbers for easy reading convenient measurement with lock screw,Portable Micrometer; Outside micrometer Precision machinist tools-- designed to measure the outside thickness or the diameter of small parts.