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 111
83 TUBULAR COMPASSES. pendicular^ or nearly so^ to the paper^ which is essential in the use of the drawing pen. This is a corresponding contrivance with that before^ as appli- … advantage of reversing points which may be changed from pen to pencil, &c., without deranging the setting of the instrument when opened to any definite extent. A and B are the two principal legs of the instrument, consisting of tubes moveable about a very nicely con- structed joint at c. Within…
House construction
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
