30-640-7 Internal Pitch Diameter Gage A complete Internal Pitch Diameter Measuring System, this IPD is a major breakthrough in utilizing software with a measuring instrument. This new system combines accurate measurements of internal threads and compensation calculations for ball diameter variations or lead angles are made extremely simple. Specifications include... 0.93" - 8" Measuring Range 1-1/8" to 8" Nominal Size Threads 7.5" to 18" Extended Range with included adapter 0.625" Gage Arm Travel 4.8" Maximum Reach in with 1.25" diameter bore 1" Travel Dial Indicator 0.0005" Graduations Software Included Features include... Universal use. Can be used as general purpose internal gage for measuring bores, grooves and pitch diameters of crew threads and internal gears. Rigid construction plus special high precision pivot bearings assure repeatability of 0.0002" or less. Adjustable contact pressure User friendly software with on screen instructions, no commands to remember. Error free data entry will detect invalid data input. System includes the following... Internal gage 1" travel indicator Indicator-adapter 8 extensions (1/4", 3/8", 1/2", 3/4", 1", 2", 3", & 4") Measuring tip Organizer 2 standard contact points 1/4" Long Allen wrench & fitted case CD ROM for internal pitch diameter threads and instruction manual