Important: Lead time on this item is currently about 3 weeks. Please contact us for the most accurate info. 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 chrome plated alloy. Swiss made. ROHS and REACH compliant. Overall Height(mm) 220 Radius of Movement(mm) 130 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=130 L1=71 D1=9 L2=59 D2=8 Threads [see 2nd picture]: M1=M6 M2=M6 Info on Base: Holding Power (n): 300 Dimensions (mm): 36 x 30 x 35 Thread: M6 If your machining task requires an affordable, and accurate holder for your dial gauge then you'll want the Fisso Classic 1100-13 F + S2 8mm Articulated Indicator Holder Arm & Switch Magnet. It includes the base and adjustment (indicator holder) so you wont need extra attachments to use it. Using your Fisso articulating arm is simple. Attach your favorite dial indicator to the adjustment, position it, 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.