Hole Gages, Linear ScaleKwik-Chek hole gages are designed for the rapid measurement of small plain hole diameters.These gages work on the principle of directly transferring diameter measurements from a sliding, tapered needle to a linear scale readout graduated in 0.001 or 0.02 mm.Features Rapid and simple calibration-setting master for plain and countersunk holes provided with each gage. Permits rapid periodic check on calibration and field readjustment, if necessary, by shop personnel. Magnified, direct reading scale -permits easy reading of hole diameters to nearest 0.001 or 0.02mm. Hardened and plated needle -precision ground tapered needle is made of hardened 52-100 steel and chrome plated for maximum wear resistance. Positive clutch -locks needle and scale at exact dimension of hole being measured. Completely portable -convenient pocket size and weight make these gages ideal for roving inspectors and mechanics.KWIK-CHEK Hole gageCatalog NumberHole Size RangeShipping WeightKW10.010-.028 1 lbKW20A.025-.130 1 lbKW 30A.130-.255 1 lbKW 40A.255- .380 KW10M.25-.70 mm.5 kgKW20AM.60-3.30 mm.5 kgKW30AM3.30-6.50 mm.5 kgKW40M6.50-9.50 mm孔规（线性刻度） 美国品牌Kwik-Chek孔规是设计用来对小圆孔进行快速测试的工具。这种仪器是利用直径转换测试的原理，通过光滑锥形的针插入孔的深度转换成最小刻度为0.001 或者0.02mm的读数进行测试的。特点 快速简便的校准 -每一款孔规为使用者提供普通孔和盲孔进行校准设置。允许对校准进行周期性检查或者野外调节；如果有必要，可以交给仪器代理商进行校准。 加大的，直读刻度 -孔径容易识读，以最接近0.001 或者0.02mm刻度的读数为准。 经过电镀的坚固的针头 -高精度的锥形探针内芯材料是52-100钢，外层镀铬，所以更加耐用。 强制离合器 -将针和刻度锁死在恰当的适合孔径测量的位置。 小型方便携带 -便于携带的尺寸和重量使得这款孔规可以用于移动检查。 Hole_Gauge.pdf也被称作孔径测量仪，孔径尺寸测量仪，孔径规，测孔仪，孔直径测量仪等；美国KWIK-CHEK生产，可以测量025-9.5mm（0.010-0.38英寸）之间的孔径大小，最小刻度0.02mm(0.001英寸）