美国高精度同心度测试仪B-10 Concentricity Gage is comprised of three main components for assembly. #1) selection of standard or precison accuracy, #2) selection of main rollers, #3) select an indicator(s) and/or other accessories. There are two classifications calibrated and directly traceable to (N.I.S.T.), Standard Black Gages are guaranteed to be better than ≤ 4µm (.00016") accuracy. Precision Gold Gages are guaranteed better than ≤ 2µm (.00008”) accuracy.#B-10 Standard Concentricity Gage Model#B-10P Precision Concentricity Gage Model Gage Specifications: Diameter Capacity: 1/8" to 1" (3mm to 25mm)Diameter Zero Capacity: 3/32" to 1/2" (1mm to 12mm)Length Capacity: ≤ 4" (102mm) Standard Accuracy: ≤ 4µm (.00016”) Precision Accuracy: ≤ 2µm (.00008”)Gage Length: 10.5" (267mm) Gage Width: 4.5" (114mm) Shipping Weight: 4.9 lbs. (2.2 kg.)