A wooden rule, two feet long, on one side of which is marked scales of equal parts, of chords, sines, tangents, rhombs, etc., and on the other side scales of logarithms of these various parts, by means of which many problems in navigation and surveying may be solved mechanically, using only divides.

(business, labor relations) A system of remuneration for workers which specifies levels of payment based on set criteria, such as the skill levels of the various jobs or the number of years of experience possessed by workers.

(physics) A particular length or distance whose value is determined to one order of magnitude (or to very few orders of magnitude)

(US, Australia) A popular scale for model railroads; 1:87 scale

(idiomatic) To decide or determine a balanced situation.

(geology, US) A particle classification system, classifying based on diameter.

Canadian (slang, idiomatic) for the early 5 cent coins of that nation.

Coccus pseudomagnoliarum, a pest of citrus.

Callipepla squamata, a species of quail.

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