General 24x Instruction Manual page 6

USING YOUR OPTICAL LEVEL
SET UP
▪ Stand the tripod (part sold separately) on
a level surface with legs spaced for stability.
▪ Thread the tripod yoke through the 58"
x 11 thread on the base of the instrument.
Screw into place until secure.
▪ Centre the bubble vial by turning the
levelling screws.
6
OPERATION
▪ Point the instrument towards the desired
area.
▪ Use a bright background or hold a white
sheet of paper in front of the area. Turn the
eyepiece until the cross hairs are a sharp
black.
▪ Turn the level towards the staff using the
optical view guide.
▪ Turn the panning screw to set the vertical
hair down the centre of the staff.
Measurement
▪ Read the staff where it is cut by the middle
hair.