About This Stainless steel digital caliper with inch/metric/fraction conversion; Home DIY and professional use are both highly recommended Fine polished stainless steel and NEW processing of depthometer's groove give better looking, smooth sliding, and accurate result Measure Range: 0-6 inches/150mm; Display: 1/2"x1 1/2" (13mm x 38mm) extra large screen; Accuracy: ±0.001"/0.03mm; Resolution: 0.0005"/0.01mm, 1/128" Each digital caliper has been fully calibrated before ready to sell (NO calibration certificate included in this model. Please purchase DCLA-0605C for NIST cert) Featured RS232 Data transfer port, comes with a data transfer cable to transfer measuring data to PC. DO NOT CONNECT WITH REGULAR USB CABLE. Patent in the US Overview Brand : VINCA Material : Stainless Steel Product Dimensions : 9.25"L x 0.75"W Measurement Accuracy : ±0.001"/0.03mm Number of Batteries : 1 LR44 batteries required. (included)