Competition Cams 4909 1" Dial Indicator Reviewhttp://tinyurl.com/my79cyz Competition Cams 4909 1" Dial Indicator 0-1 inch travel by .001 inch jeweled dial indicator is compatible with all COMP products that require the use of a dial indicatorFeature lug back, 3/8 inch shaft, 0-100 dial face and revolution counterTwo length extensions available
