SPI Electronic Indicator with Analog & Digital Display Features Include... 0-0.250" / 0-6.35 mm Measuring Range 0.00005" / 0.002 mm Resolution + 0.0003" / 0.008mm 360° Screen Rotation Threaded Tip: 4-48 Lug & Flat Back included Stem diameter: 3/8" Certificate of Calibration included Ground Shipping Only This gage contains lithium batteries. UPS will only ship products with lithium batteries via Ground shipping ONLY.