Before revision: Static Friction Tribometer|373x373px Hydrogen Tribometer|334x334px A tribometer is an instrument that measures tribological quantities, such as coefficient of friction, friction force, and wear volume, between two surfaces in contact.
After revision: 335x335px|Pneumatic tribometerStatic Friction Tribometer|373x373px Hydrogen Tribometer|334x334px A tribometer is an instrument that measures tribological quantities, such as coefficient of friction, friction force, and wear volume, between two surfaces in contact.