A plumb bob
thingiverse
A plumb bob, or plummet, is a weight, usually with a pointed tip on the bottom, suspended from a string and used as a vertical reference line, or plumb-line. The plumb line is used to set the rails in a vertical position for vertical adjustment when leveling an uneven position The plumb line is widely used in construction and earthmoving. Print models. Pour sand, shot or the like into the bottom of the bottom to make it heavier. Glue the top. (translate google)
Download Model from thingiverse
With this file you will be able to print A plumb bob with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on A plumb bob.