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Measurement Devices
length/area/volume devices | other
devices
Length/Area/Volume Measurement Devices
| Measurement |
Device |
Units |
| Area |
planimeter |
m2 |
| Diameter |
caliper (internal or external)
micrometer |
mm, m
µm |
| Distance away |
laser rangefinder, lidar, radar |
km |
| Distance travelled, on foot |
pedometer (actually counts steps) |
m |
| Distance travelled, car |
odometer |
km |
| Height |
altimeter (atmospheric pressure or radar)
GPS |
m |
| Length, light waves |
interferometer |
nm |
| Length |
caliper |
mm |
| Length |
ruler |
mm, cm |
| Length |
tape
measure |
mm, cm, m |
| Length, arbitrary curves (eg, contours or roads on a map) |
opisometer
surveyor's
wheel |
mm
m |
| Location/position |
GPS |
°N/S, °E/W |
| Gap, clearance |
caliper (internal)
feeler
gauge |
mm |
| Volume |
graduated
cylinder
measuring
cup
pipette |
mL, L |
Other Measurement Devices
| Measures |
Device |
Units |
Acceleration (including vibration),
gravity |
accelerometer
gravimeter |
m/s2 |
| Angle |
protractor |
° |
| Angle, direction |
(magnetic)
compass, theodolite |
° |
| Angle, elevation |
astrolabe, inclinometer (or clinometer), sextant, theodolite, three axis accelerometer with trigonometry (as used in cellphones)
laser
line level, spirit
level (for level, a lack of elevation angle) |
° |
| Angle, wind direction |
weather
vane |
° |
| Climb speed (rate of climb) |
variometer |
m/s |
| Current |
galvanometer
ammeter |
µA
µA, mA, A |
| Electricity, quantity |
voltameter (not voltmeter) |
C (= A·s or F·V) |
| Gas and liquid flow |
flow
meter (lots of different sorts for gas and liquid)
gas
meter (several sorts) |
L/s, m3/s (cumecs), etc |
| Light, radiant energy power |
radiometer (a simplified version is Crookes_radiometer) |
W |
| Light, radiant energy intensity |
pyranometer |
W/m2 |
| Mass and weight |
balance,
spring
scale (aka spring balance)
weighing
scale (including digital scale) |
g, kg, N |
| Milk, richness |
lactometer |
° (out of 100) |
| Optical density (darkness) |
densitometer |
|
| Pressure, atmospheric |
barometer (How
to Use a Barometer...)
barograph |
Pa (= N/m2) |
| Resistance |
ohmmeter |
Ω |
| Rotation speed |
tachometer |
rpm |
| Sound |
sound
level meter |
dB (or dBA) |
| Speed |
doppler
radar (radar
gun)
speedometer
tachymeter (not tachometer) |
km/h |
| Temperature |
thermometer |
°C, K |
| Thermal conductivity, gas |
katharometer |
W/(m·K) |
| Time |
calendar (this doesn't actually measure time)
sundial
hourglass, egg
timer
clock
marine
chronometer (see John
Harrison, 1737, subject of the excellent book Longitude)
atomic
clock
|
s |
| Volts (electrical potential) |
voltmeter |
mV, V |
| Weight |
see Mass above |
|
| Wind speed |
anemometer |
m/s |
Devices which can measure a variety of things include multimeters
and oscilloscopes.
There are lots
more measuring devices.
Without looking, can you guess what a heliometer measures? Remember your chemistry
lessons?
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