Last Updated：2025/11/29
(astronomy) A kind of altitude and azimuth instrument. The object end of the telescope is placed at right angles to the eye end, with a prism of total reflection at the angle, and the eye end constitutes a portion of the horizontal axis of the instrument, having the eyepiece at the pivot and in the center of the altitude circle, so that the eye has convenient access to both at the same time.
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universal instrument
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Source Word
universal instrument
Noun
(astronomy)
A
kind
of
altitude
and
azimuth
instrument.
The
object
end
of
the
telescope
is
placed
at
right
angles
to
the
eye
end,
with
a
prism
of
total
reflection
at
the
angle,
and
the
eye
end
constitutes
a
portion
of
the
horizontal
axis
of
the
instrument,
having
the
eyepiece
at
the
pivot
and
in
the
center
of
the
altitude
circle,
so
that
the
eye
has
convenient
access
to
both
at
the
same
time.
Japanese Meaning
天文学における高度・方位の測定装置。望遠鏡の対象側が観測側と直角に配置され、全反射プリズムによって反射される構造を持ち、接眼側が水平軸の一部となることで、接眼レンズ（ピボット位置にあり高度円の中心）から両側を同時に観測できる設計となっている
Sense（1）
(astronomy)
A
kind
of
altitude
and
azimuth
instrument.
The
object
end
of
the
telescope
is
placed
at
right
angles
to
the
eye
end,
with
a
prism
of
total
reflection
at
the
angle,
and
the
eye
end
constitutes
a
portion
of
the
horizontal
axis
of
the
instrument,
having
the
eyepiece
at
the
pivot
and
in
the
center
of
the
altitude
circle,
so
that
the
eye
has
convenient
access
to
both
at
the
same
time.
（ plural ）
