Worthen, William Ezra, 1819-1897, [from old catalog] ed · New York, Appleton · leaf 711
Fig. 1754. same scale. The axes are called iso-metric axes, and all lines parallel tothem are called isometric lines. The planes containing the isometric axes are isometric planes; the point in theobject projected, assumed as the origin of the axes, is called the regulating-point. To draw the…
Mechanical drawing
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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