Rudimentary treatise on the erection of dwelling-houses : illustrated by a perspective view, plans, elevations, and sections of a pair of semi-detached villas with the specification, quantities, and estimates and every requisite detail, in sequence, for their construction and finishing / by . e purpose of fixinga pencil firmly in its tube h-, the screw i is for adjustingthe blades of the pen-point g, between which the inkis inserted to any required degree of fineness, so as toproduce a corresponding fine or coarse circular joint m, by removing altogether the screw i, givesth
Rudimentary treatise on the erection of dwelling-houses : illustrated by a perspective view, plans, elevations, and sections of a pair of semi-detached villas with the specification, quantities, and estimates and every requisite detail, in sequence, for their construction and finishing / by . e purpose of fixinga pencil firmly in its tube h-, the screw i is for adjustingthe blades of the pen-point g, between which the inkis inserted to any required degree of fineness, so as toproduce a corresponding fine or coarse circular joint m, by removing altogether the screw i, givesthe means of opening the blades for the better cleans-ing them after use. Portable or Turn-in Compasses. This forms in itself a complete portable case of draw-ing instruments, consisting of a large pair of compasseswith movable points, which are also so contrived thatone forms in itself a small pencil bow and the other apen bow; and when the whole instrument is put toge- PORTABLE COMPASSES. 77 ther and folded up (or the points turned in, fromwhence is derived the name of turn-in compasses) theyoccupy a space not more than three inches long, andmay be carried in the pocket without being an incum-brance. The annexed engraving represents the instruluent when all its parts are together. The principal. legs of the instrument are f and g, movable, as usual,by a joint at a. The lower joints, b and c, afford themeans of setting the front limbs, d and e, perpendicularto the paper, as explained before when describing thelast instrument. Each of the point limbs may be re-moved from the legs f and g, and by means of theirjoints b and c form perfect instruments—the one a penbow, represented at h, and the other a pencil bow,shown at I k. The points of these lesser instrumentsare all adapted to slide into the principal legs, f and g,of the larger one, which are made hollow for their 78 ERECTION OF DWELLING-HOUSES. reception. A section of the limb f is shown at j, toconvey to the reader a bett
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectarchitecturedomestic
