Digimatic Inside Micrometer (Extension Rods 8-40")

Product Details Wide range of ID measurements by combining extension rods (pipes) and anvils with the micrometer head The 339 series uses highly-durable extension pipes Carbide-tipped measuring faces Technical Data Accuracy: ±(3+n+L/50)µm, n=Number of rod, L=Maximum measuring length (mm), Fraction rounded up, Excluding quantizing error (337 series) Resolution: 0.001mm or .0001"/0.001mm Display: LCD Battery: SR44 (1 pcs.), 938882 Battery life: Approx. 8 months under normal use