Fowler 52-710-025-0 Coax 2-Dimensional Coaxial Indicator Set, Coaxial Indicator with 0.250" Measuring Range & 0.0002" Readability, Includes Internal, External, & Center Point Feelers, & Case
Two-dimensional coaxial indicator can be used at any angle for accurate centering and positioning of components in most machining applications
42.5mm diameter continuous dial has a 0-50 dial reading, 6mm offset axis measuring range, and 0.01mm graduations for taking direct readings
Three internal and three external feelers and a center point feeler have 1/8" ball diameter, a locating accuracy of + or - 0.005mm of true center and provide a wide measuring capacity of 0-300mm, face remains stationary during spindle rotation up to 800 RPMs
Set includes coaxial indicator, three internal feelers, three external feelers, center point feeler, restraining arm, and fitted case