pinpointer
keratometry
passive gravitational mass
paragravity
bigravity
gravitoelectromagnetism
zenith telescope
densitometer
doorstopper
tattler
telescopical
magnetogravimetric
gravitaxic
isogravitational
potmeter
air reconnaissance
gravitropically
platometer
gravistimulation
transit instrument
potentiometrically
slingshot
astrointerferometer
dioptric
rainmeter
theodolite
telescopic
transit
Crookes radiometer
refractor
strainometer
reflector
raft
principle of equivalence
telescopist
robodoc
perspective glass
astronomy satellite
astronomical telescope
microgravimetry
thoracometer