Fisso Strato U-Line A-33 P + G 3/8" Articulated Indicator Gauge Holder Arm & Granite Base

see 2nd picture]: M1=M8 M2=M8 Info on Base: Dimensions (mm): 150 x 120 x 50 x 50 Thread: M8 The Fisso Strato U-Line A-33 P + G 3/8" Articulated Indicator Gauge Holder Arm & Granite Base is a solid option if your machining task demands easy, quick, & extremely accurate measurements. The Fisso articulating arm comes with everything you need to use it, all you have to do is add your desired gauge or indicator. After the gauge is attached simply place the base where you need it, move the arm into position, and twist the knob. Now you're now ready to start taking measurements. Still have questions? You can contact us, or take a look at the Fisso Resource Center.