Sliding

Screw and nut

Rack and pinion

Worm and worm wheel

Lengthy sleeve

Lengthy spindle

Adjustable base

Equipped with a set of extension rods

Dial

Disc

Blade

Stock

Flat pulley

Jockey pulley

Stepped pulley

Fast and loose pulley

Spindle damage

Hard jaw damage

Fixed jaw damage

Movable jaw damage