DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.62828#0069
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what is loft or gained on one line, by thefe uncertain divifions,
will be regained or loft, when the fame uncertain divifions are
placed the contrary way on the other parallel line. This is
clearly exemplified in the figure by the fmall dotted divifions on
each line, which are ihorter than the proper ones on the given
line. Yet, if right lines be drawn through each correfponding
dot, they will cut the given line as before.
The fmall dotted line drawn acrofs, from the correfpondent
points near to 1.5, demonftrates this, and therefore it is unne-
ceflary to fay more.
Problem II. Fig. 2.
To divide a frieze or pilafter, 8cc. 8c c. into any given num*
ber of flutes and fillets: the following method is amiaftsohitaife ...
and quick one.
.. ... q ••
1. Let An uv ui .^ppofed width of the pilafter required
to be fluted.
Operation.—Draw the right line CD indefinitely. Take then
two pair of compafles, one for the flutes, and the other for the
fillets; and with the firft opening of your compafles for the flutes,
lay it on C D, and divide this uncertain opening a b into three.
Again, take one of thefe three parts for each fillet, as c a, and
repeat
what is loft or gained on one line, by thefe uncertain divifions,
will be regained or loft, when the fame uncertain divifions are
placed the contrary way on the other parallel line. This is
clearly exemplified in the figure by the fmall dotted divifions on
each line, which are ihorter than the proper ones on the given
line. Yet, if right lines be drawn through each correfponding
dot, they will cut the given line as before.
The fmall dotted line drawn acrofs, from the correfpondent
points near to 1.5, demonftrates this, and therefore it is unne-
ceflary to fay more.
Problem II. Fig. 2.
To divide a frieze or pilafter, 8cc. 8c c. into any given num*
ber of flutes and fillets: the following method is amiaftsohitaife ...
and quick one.
.. ... q ••
1. Let An uv ui .^ppofed width of the pilafter required
to be fluted.
Operation.—Draw the right line CD indefinitely. Take then
two pair of compafles, one for the flutes, and the other for the
fillets; and with the firft opening of your compafles for the flutes,
lay it on C D, and divide this uncertain opening a b into three.
Again, take one of thefe three parts for each fillet, as c a, and
repeat