Technical Inspection
It is recommended to carry out a technical inspection before each use of the device.
Check the following:
The device appearance (there should be no cracks on the body).
The state of the objective, eyepiece and rangefinder lenses (there should be no
cracks, grease spots, dirt or other deposits).
The state of the rechargeable battery (should be charged) and the electric
contacts (should be no signs of salts, oxidation or debris).
The controls should be in working order.