post office box
surveying instrument
refret
xylometer
surveyor's instrument
endosmometer
polygraph
immitanciometer
volumenometer
compressor
phonometer
sound
densitometer
derivatograph
diluter
reading
velometer
overinstrumentation
clock
plicometer
argentometer
plethysmometer
electrocautery
cutometer
instrumentation
high fidelity sound system
depressor
radiolocator
decelerometer
orientator
oscillographically
instrumentalize
meter reading
scummer
electrographically
metra
morcellator
ergographic
hi-fi
chromameter
cardiotachometer
absolute instrument
ergograph
Fizeau-Foucault apparatus