Rudimentary treatise on the erection of dwelling-houses : illustrated by a perspective view, plans, elevations, and sections of a pair of semi-detached villas ... (1877)
Brooks, S. H. (Samuel H.) · London : C. Lockwood & Co. · leaf 96
75 TUBULAR COMPASSES. they may be drawn out to their required extent with a smooth and steady motion, not subject to sudden stop- pages, or to move with equally sudden jerks, a proof of bad workmanship, but uniformly, and not too easy.* To assist in this, their inner extremities are made to … limbs perpendicular to the paper, and consequently paral- lel to eacl other, at whatever opening the legs of the com- passes may be extended to. In our engraving, the pivots of the two point limbs/, Ti and e, g to the two carrying pieces, which are jointed to the tubes at a and b, also give the…
House construction
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten15unit-521-297.webp)
