An insturment with two legs, one of them sliding, used to measure the thickness of objects.

Paper thickness in thousandths of an inch.

1. Thickness of paper or other substrate expressed in thousandths of an inch (mils or points), pages per inch (ppi), thousandths of a millimetre (microns) or pages per centimetre (ppc). 2. Device on a sheet-fed press that detects double sheets or on a binding machine that detects missing signatures or inserts.

Part of the braking system the holds and operates the brake pads; presses disk brake pads against brake rotor to provide friction to stop the wheel.

an instrument for measuring the distance between two points

measure the diameter of something with calipers