The microscope arm is fitted with an adjustable gas spring. By adjusting the position of one end of
the gas spring, the amount of upward force can be changed. Thus if accessories are added to or
removed from the microscope, the force setting can be adjusted to compensate for the change in
weight, thereby maintaining the same desired ‘feel’ of the arm movement.
To adjust the gas spring:
1.
With one hand, push the pantograph arm down until it is in the horizontal position. This will
expose the socket in the adjusting screw.
2.
Using the 5mm socket key provided in the tool box, rotate the screw clockwise to move the
adjusting nut up and decrease the arm force. Alternatively rotate the screw anti-clockwise to
move the nut down and increase the arm force.
CAUTION:
Always check the arm movement over the entire up/down stroke of the arm. If the microscope
is heavily loaded with accessories and the arm force is set too low, the arm may drop suddenly if
it is not adequately restrained with the friction lock.
