From BiblePortal Wikipedia

Webster's Dictionary [1]

(n.) The science of, or a system of, weights and measures; also, a treatise on the subject.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [2]

(4.) Prof. T. O. Paine, the acute and accurate author of Solomon'S Temple , etc. (Bost, 1861)' presents some original and ingenious views on the subject, which appear to us to solve most of the above difficulties. He maintains that there was but one cubit in use among the Hebrews, and that essentially the same with the Egyptian cubit. The "hand-breadth" he regards as an addition (a b) to the rod itself (b c), for convenience of holding, as in the annexed figure. This, he thinks, likewise explains the peculiar phraseology in  Ezekiel 43:13 :

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Bibliography Information McClintock, John. Strong, James. Entry for 'Metrology'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. Harper & Brothers. New York. 1870.