INSIZE Electronic Thickness Gage Designed to measure parts single handed by using handle and lifting lever. Features include... Easy to use retractable handle offers quick and efficient inspiration. Ceramic Spindle Tip & Anvil Flat contact points. Dial diameter: 2-1/4" Throat depth: 1.181" Contact Points Diameter: 0.394" Part Number Range Resolution Accuracy 2871-10 0-0.4" / 0-10mm 0.0005" / 0.01mm + 0.0008" 2871-101 0-0.4" / 0-10mm 0.00005" / 0.001mm + 0.0002" Please make sure to select the correct resolution you want before adding to the cart.