Rudimentary treatise on the erection of dwelling-houses, or, The builder's comprehensive director : explained by a perspective view, plans, elevations, and sections of a pair of semi-detached villas ... (1860)
Brooks, S. H. (Samuel H.) · London : J. Weale · leaf 116
s given to the screw_, the divisions on the head show what fraction of a turn has been given, and if it be known what number of turns or threads of the screw are equal to one inch, the points of these com- passes may be thus set to aity small definite measure of length with the utmost precision.… … Spring Dividers, This instrument^ represented in the accompanying diagram^ is particularly useful for repeating divisions of a small but equal extent — a practice that has the
House construction
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
