An instrument used to measure the angular separation of two stars that are too far apart to be included in the field of view of an ordinary telescope.
Roget 466:
measurement,
admeasurement†,
mensuration,
survey,
valuation,
appraisement,
assessment,
assize;
estimate,
estimation;
dead reckoning,
reckoning
etc.
(numeration)
85;
gauging
etc.
v.;
horse power.
metrology,
weights and measures,
compound arithmetic.
measure,
yard measure,
standard,
rule,
foot rule,
compass,
calipers;
gage,
gauge;
meter,
line,
rod,
check;
dividers;
velo†.
flood mark,
high water mark;
Plimsoll line;
index
etc.
550.
scale;
graduation,
graduated scale;
nonius†;
vernier
etc.
(minuteness)
193.
[instruments for measuring]
bathometer,
galvanometer,
heliometer,
interferometer,
odometer,
ombrometer†,
pantometer†,
pluviometer†,
pneumatometer†,
pneumometer†,
radiometer,
refractometer,
respirometer,
rheometer,
spirometer†,
telemeter,
udometer†,
vacuometer†,
variometer†,
viameter†,
thermometer,
thermistor
(heat)
etc.
382,
barometer
(air)
etc.
338,
anemometer
(wind)
349,
dynamometer,
goniometer,
(angle)
244
meter;
landmark
etc.
(limit)
233;
balance,
scale
etc.
(weight)
319;
marigraph†,
pneumatograph†,
stethograph†;
rain gauge,
rain gage;
voltmeter
(volts),
ammeter
(amps);
spectrophotometer
(light absorbance);
mass spectrophotometer
(molecular mass);
geiger counter,
scintillation counter
(radioactivity);
pycnometer
(liquid density);
graduated cylinder,
volumetric flask
(volume);
radar gun
(velocity);
radar
(distance);
side-looking radar,
(shape, topography);
sonar
(depth in water);
light meter
(light intensity);
clock,
watch,
stopwatch,
chronometer
(time);
anemometer
(wind velocity);
densitometer
(color intensity).
measurability,
computability,
determinability†.
coordinates,
ordinate and abscissa,
polar coordinates,
latitude and longitude,
declination and right ascension,
altitude and azimuth.
geometry,
stereometry†,
hypsometry†;
metage†;
surveying,
land surveying;
geodesy,
geodetics†,
geodesia†;
orthometry†,
altimetry†;
cadastre [Fr.].
astrolabe,
armillary sphere†.
land surveyor;
geometer.
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