Features: Easy, fast & accurate positioning. Precise microfine adjustment with dovetail and mounting hole. One knob allows for simultaneous tightening / releasing of all 3 joints. Uses a maintenance-free, mechanical central tightening system. Quick, stepless lock. High-quality, red anodized, light alloy. Swiss made. ROHS and REACH compliant. Overall Height(mm) 335 Radius of Movement(mm) 200 Microfine Adjustment hole diameter: 8mm Dial Gauge is NOT included. Still need an Indicator? Check out our selection here. Arm Dimensions (mm) [see 2nd picture]: L=200 L1=120 D1=10 L2=80 D2=9 Threads [see 2nd picture]: M1=M8 M2=M6 Info on Base: Holding Power (n): 300 Dimensions (mm): Ø 40 x 30 Thread: M8 If the job demands an indicator holder that's simple to use, and allows for reliable measurements without a lot of adjustments you need to get the Fisso Strato S-20 F TM 8mm Articulated Indicator Gauge Holder Arm & Pot Magnet. It includes the indicator holder and the base so you won't need to search for extra attachments. Operating your Fisso articulating arm is extremely easy; add a dial indicator, put it into position, twist the knob, and you're ready to start measuring. Still have questions? You can contact us, or take a look at the Fisso Resource Center.