Before the introduction of the euro, francs were also used in France, Belgium and Luxembourg, while Andorra and Monaco accepted the French franc as legal tender (Monegasque franc).
Inside the caliper is a brake pad, a small block of friction material backed with a metal plate. When you step on your brake pedal, pistons inside the caliper cause it to apply pressure to the brake pad which squeezes the rotor, causing the car to slow or stop.
or calliper. 1. Usually, calipers. an instrument for measuring thicknesses and internal or external diameters inaccessible to a scale, consisting usually of a pair of adjustable pivoted legs. 2. any of various calibrated instruments for measuring thicknesses or distances between surfaces, usually having a screwed or sliding adjustable piece.