Of a virtual reality system: designed to allow users to walk around freely in a designated area, with their real-life motion reflected in the simulated environment.

A scale used by surveyors for reducing chains and links to acres and rods.

A weighing-machine with a flat surface for holding the thing to be weighed.

A scale used for model railways, varying from 1:148 to 1:160 but always having a gauge (distance between the rails) of 9 mm or 0.354 in.

(ichthyology) One of the scales along the midside that spans from the rear edge of the gill cover to the base of the caudal fin of a fish, usually along a lateral line.

An accurately balanced lever-scale for weighing very light objects.

unrefined paraffin

A scale for weighing in which the fulcra of the levers or beams are strained wires or strips acting by torsion.

A dimensionless scale used to express electronegativity.

A scale of physical development in children, adolescents, and adults, based on external primary and secondary sex characteristics, such as the size of the breasts and the development of pubic hair.