adjustment
alignment
angle
appliance
background
compensator
conditions
construction
correction
degree
device
distance
division
electronic
engineering
equipment
excavations
expedition
field
forest
geodesy
hill
indications
instrument
landscape
lens
level
limb
measurement
mounted
nobody
north
optical
optics
orange
outdoor
river
rotate
screw
space
summer
surveying
system
technology
terrain
trees
tripod
turn
valley
works