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.

plural of sample scale

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.

plural of torsion scale

(astronomy) A nine-level numeric scale that measures the night sky's brightness of a particular location.

plural of bugle scale

(music) The set of five distinct overtones that can be played on a simple bugle, without the use of valves or other pitch-altering devices.

present participle of scale out