scientific nautical surveying electric photographic cinematographic optical weighing measuring signalling | checking

checking
chem. met.	checking

| and

and
agric.	Muscovy Duck; duck; female duck; duckling; duck
ornit.	duck

teaching apparatus | and

and
agric.	Muscovy Duck; duck

| instruments

instrument
earth.sc. mech.eng.	appliance

apparatus | for

for
transp.	fore

recording | transmission

transmission
el.	unilateral or bilateral transmission

or reproduction of | sound

sound
mus.	sound

or | images

image
econ.	image