Plumb bob Tip of bob is flexible,the line rotation within the plumbbob Size:length 108mm diameter:34mm Weight:300g

•Plumb bob for measuring the surface if its vertical,mainly used for construction work.

•In measuring work,it is usually as an appendix to theodolite,total station.

•The tip of plumb bob is flexible,when you don't use it,you can make the tip retract.

•The line rotation within the plumb bob,the length can be adjusted by rotating the knob.(the max   length is 3m)