Mini 3D 50lb with fine adjustment and 2 magnetic faces (bottom and back) and switch on/off, base size (L x W x H): approximate 1.5 x 1.1 x 1.4 inch / 38 x 29 x 35 mm, total height: approximate 9 inch / 23 cm, clamping hole diameter: approximate 3/8 inch / 9.5 mm. Please see to it that it is mini type with more flexible and portable size, and the magnetic base is 50lb, compared with normal ones (bigger, heavier, and usually 130lb).
2 ways to hold test indicators: with 3/8" stem or dovetail
3D Locking: the arm can be locked in any position using the tightening knob. Because of the mini size, this holder is particularly good to use the small test indicator in some little space.