DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.18826#0104
74
on PERSPECTIVE. [l£CT. ii,
PLATE XXV.
Shews the infide of an apartment: C the center j
HL the horizontal line; the windows are placed
' according to meafures given, and fet off on the
ground line A. 1 2 3 4 refer to the diftances of the
window panes, &c. and being ruled to H, cut the
line AC, at the proper places, from whence per-
pendiculars being raifed, the wall of the window is
found. The panes being fuppofed at the outer edge
of the wall, require the continuation of the lines 2H,
3 H, croft the window fill 5, 5, in the neareft wall,
parallel to HL. The upright meafures, 5, 6, 7, 8, 9,
determine their heights, not only in thenearefi: wall,
but (by being ruled to C) in the furtheft wall, by their
interfe&ion with it; to which 5,6, 7,8,9, are parallel.
The lines are continued crofs the window fill for the
panes, in the further wall, to C, as before, along the
floor; and their distances from each other are re-
gulated by the original meafures on the ground line,
drawn to C, as appears at 1,2, 3, 4, under the win-
dow. All meafures for horizontal objects muft be
placed on the ground line, or on a line parallel to it,
in fome convenient part of the picture ; and all mea-
fures for vertical objects, on an upright line.
No. II. Is a reprefentation of a bureau, with the
flap open; which is much the fame as the trap door,
in the next Plate: e is its hinge,/its edge, abc the
circle it forms in opening, OO on the line O X, two
points which aflifl in drawing the circle; Xthe dip
tance of that circle : A is one fide of the bureau per-
pendicular to the picture, and B the ground line.
4 PLATE
on PERSPECTIVE. [l£CT. ii,
PLATE XXV.
Shews the infide of an apartment: C the center j
HL the horizontal line; the windows are placed
' according to meafures given, and fet off on the
ground line A. 1 2 3 4 refer to the diftances of the
window panes, &c. and being ruled to H, cut the
line AC, at the proper places, from whence per-
pendiculars being raifed, the wall of the window is
found. The panes being fuppofed at the outer edge
of the wall, require the continuation of the lines 2H,
3 H, croft the window fill 5, 5, in the neareft wall,
parallel to HL. The upright meafures, 5, 6, 7, 8, 9,
determine their heights, not only in thenearefi: wall,
but (by being ruled to C) in the furtheft wall, by their
interfe&ion with it; to which 5,6, 7,8,9, are parallel.
The lines are continued crofs the window fill for the
panes, in the further wall, to C, as before, along the
floor; and their distances from each other are re-
gulated by the original meafures on the ground line,
drawn to C, as appears at 1,2, 3, 4, under the win-
dow. All meafures for horizontal objects muft be
placed on the ground line, or on a line parallel to it,
in fome convenient part of the picture ; and all mea-
fures for vertical objects, on an upright line.
No. II. Is a reprefentation of a bureau, with the
flap open; which is much the fame as the trap door,
in the next Plate: e is its hinge,/its edge, abc the
circle it forms in opening, OO on the line O X, two
points which aflifl in drawing the circle; Xthe dip
tance of that circle : A is one fide of the bureau per-
pendicular to the picture, and B the ground line.
4 PLATE