- An
alidade (/ˈæ.lɪ.deɪd/) (archaic
forms include alhidade, alhidad, alidad)[citation needed] or a
turning board is a
device that
allows one to
sight a...
- proper, the mariner's
astrolabe was
rather a
graduated circle with an
alidade used to
measure vertical angles. They were
designed to
allow for their...
-
Instruments used in
surveying include:
Alidade Alidade table Cosmolabe Dioptra Dumpy level Engineer's
chain Geodimeter Graphometer Groma (surveying) Laser...
- position, only the
position of the
alidade or
similar index need be determined. In that case, the
observer moved the
alidade until the
object of
interest is...
-
graduation of 360
degrees around the back edge. The
alidade is
attached to the back face. An
alidade can be seen in the
lower right illustration of the...
-
drawing sheet is
attached to the
surface and an
alidade is used to
sight objects of interest. The
alidade, in
modern examples of the
instrument a rule with...
- area. In 1922, a USGS scientist,
George R. Mansfield, used a map and an
alidade telescope to
prove that the
lights that were
being seen were trains, car...
- season. This ring is
often equipped with
vanes and
pinholes for use as the
alidade of a
dioptra (see image). It can be used to
measure declination. This ring...
- can be
compared to
other contemporary instruments such as the groma, the
alidade, and the
later theodolite.
While the
groma was
primarily used for laying...
-
Alidade Cr**** is a
stream in the U.S.
state of Idaho. It is a
tributary of
Johnson Cr****.
Alidade Cr**** was
named after the
alidade, a
surveying instrument...
