0-4 In, .001 In Mechanical Depth Micrometer, 4 interchangeable rods (1 In/25.4mm increments), Rod Clamp, 2.5 In Base, Ratchet Stop Interchangeable rods provide a wide measuring range. With ratchet stop for constant force. The rod length can be adjusted in 1 In or 25mm increments. FULL SPECIFICATIONS ACCURACY INCH±.00012 In ACCURACY INCH+/-.00012 In BASE FLATNESS INCH.00005 In BASE LENTH INCH2.5 In BASE WIDTH INCH.63 In CASE MATERIALPlastic Case CASE PART NUMBER04MZA091 CATEGORY IDPrecision Measuring Tools MITUTOYO CATALOG PAGE NUMBERD-50 COMMENT.157 In Dia. Rods COMMENT.157 In Dia. Rods CONTACT POINT DIAMETER INCH.157 In CONTACT POINT FLATNESS INCH.00001 in CONTACT POINT FLATNESS MM0.3?m GROUP IDMechanical Micrometers INDIVIDUAL OR SETIndividual LENGTH INCH2.5 In (Base) MECHANICAL OR DIGITALMechanical OD MEASURING RANGE LOWER INCH0 In OD MEASURING RANGE UPPER INCH4 In PARRALLELISM INCH[.00016 + (.00004 x R/2] In PRIMARY MEASURING RANGE LOWER INCH0 In PRIMARY MEASURING RANGE UPPER INCH4 In PRODUCT MANUAL1030_Depth Micrometer PRIMARY (OD) CONTACT POINT MATERIALCarbon steel Product TypeDepth Micrometer PRODUCT MANUAL1030_Depth Micrometer RANGE0 - 4 In RANGE STEPNA RESOLUTION OR GRADUATION INCH.0005 In SHIPPING HEIGHT INCH1.5 SHIPPING LENGTH INCH10.5 SHIPPING WEIGHT LBS1.5 SHIPPING WIDTH INCH6.5 THIMBLE DIAMETER18.3mm THIRD DRILL DOWNDepth Micrometers WDTHIN.63 In (Base) US Harmonized Tariff Schedule9017.30.4000