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Bore gauges Product information Indicating bore gauges Design and use: Measuring head with hardened, hard chrome-plated guide cylinder and carbide-tipped measuring probes. The carbide expanding pin transfers radial movement to indicating instrument. Constant measuring force due to built-in measuring force spring Results are thus independent of the personal sense or influence of the user. For fast inspections of boreholes regarding diameter, roundness and conicity. Particularly suitable for serial control with tight tolerances. No oscillation required to determine the reversal point. Measuring head, holder, depth extension, right angle attachments and depth stops are part of an extensive modular system Display units cat. no. 320660 - 320964 Measuring head type 844 Dk: Standard version Measuring head type 844 Dks: For blind holes, for measurement to the bottom of the bore. Instrument Measuring head type 844 Dkr: With extended guide cylinder for measurement holder of through-holes from the edge of the hole. Particularly suitable for narrow parts. Measuring head When ordering please specify nominal diameter and fit or the limits of the bore to be tested. Type 844 Dk Type 844 Dks Type 844 Dkr Example: Bore gauge for bore 35 D7 Nominal dimension 35 mm Minimum dimension 35.080 mm Maximum dimension 35.105 mm Measuring range 35.050 - 35.280 mm On request we will provide you with an offer. Measuring head for through-holes type 844 Dk Size = diameter Dimensions Measuring range Connection thread Dmm l1 × l2 × emm based on the minimum dimen- Gsion 2.98-3.99 23.3 × 31.3 × 1.5 -0.02 / +0.10 M6 × 0.75* >4-8 23.0 × 31.3 × 1.5 -0.02 / +0.10 M6 × 0.75* >8-16 25.0 × 33.5 × 3.0 -0.02 / +0.15 M6 × 0.075 >16-44 26.0 × 39.0 × 3.5 -0.02 / +0.20 M10 × 1 >44-70 26.0 × 39.5 × 4.0 -0.03 / +0.20 M10 × 1 >70-200 33.0 × 39.5 × 4.0 -0.04 / +0.20 M10 × 1 Measuring head for blind holes type 844 Dks Size = diameter Dimensions Measuring range Connection thread Dmm l1 × l2 × emm based on the minimum dimen- Gsion >4-8 23.3 × 31.3 × 1.5 -0.02 / +0.10 M6 × 0.75* >8-16 25.0 × 33.5 × 3.0 -0.02 / +0.15 M6 × 0.075 >16-44 26.0 × 39.0 × 3.5 -0.02 / +0.15 M10 × 1 >44-70 26.0 × 39.5 × 4.0 -0.03 / +0.15 M10 × 1 >70-150 33.0 × 39.5 × 4.0 -0.04 / +0.15 M10 × 1 Measuring head with extended guide cylinder type 844 Dkr Size = diameter Dimensions Measuring range Connection thread Dmm l1 × l2 × emm based on the minimum dimen- Gsion 2.98-3.99 28.0 × 36.0 × 6.0 -0.02 / +0.10 M6 × 0.75* >4-8 28.0 × 36.0 × 6.0 -0.02 / +0.10 M6 × 0.75* >8-16 31.0 × 40.0 × 9.0 -0.02 / +0.15 M6 × 0.075 >16-44 32.0 × 45.0 × 9.5 -0.02 / +0.20 M10 × 1 >44-70 26.0 × 46.0 × 10.5 -0.03 / +0.20 M10 × 1 >70-200 33.0 × 51.0 × 15.0 -0.04 / +0.20 M10 × 1 Fitting adjustment rings see under 384160. * = via adapter www.precitool.de 31/679