Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 919
RAMMEL, or TRAMMEL-GAUGE. This tool, Fig. 4148, to which the term beam compass is alsoapplied, consists of a bar A, of iron or wood, carrying two sliding pieces B C, having steel or pencilpoints. For draughtsmens use it is made much lighter than is here shown, and is provided withset-screws instead…
Mechanical engineering -- Dictionaries
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