Ryobi LDM-20, Owner'S Operating Manual

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5
ACCURACY CHECK OF THE MEASURING TOOL
The accuracy of the measuring tool can be checked as
follows:
.
Select a permanently unchangeable measuring section
with a lengh of approx. 3 to 10 metres;its length must
be precisely known (e.g. the width of a room or a door
opening).The measuring distance must be indoors;the
target surface for the measurement must be smooth and
reflect well.
.
Measure the distance 10 times after another. The
deviation of the individual measurements from the
mean value must not exceed ±2mm(max.).Log the
measurements,so that you can compare their accuracy at
a later point of time.
MAINTENANCE
This laser distance measure has been designed to be
a low-maintenance tool. However, in order to maintain
its performance, you must always follow these simple
directions.
1. Always handle the tool with care. Treat it as an optical
device, such as a camera or binoculars.
2. Avoid
exposing the tool to shock, continuous vibration or
extreme hot or cold temperature.
3 . Always store the tool indoors. When not in use, ALWAYS
store the tool in its protective case.
4. Always Keep the tool free of dust and liquids. Use only a
clean, soft cloth for cleaning. If necessary, slightly moisten
the cloths with pure alcohol or a little water.
5. Do not touch the lens with your fingers.
6. Check the batteries regularly to avoid deterioration.
ALWAYS
remove the batteries from the tool, if it is not
going to be used for an extended period of time.
7. Replace the batteries when the battery icon is continuously
empty displayed on the LCD.
8. Do not disassemble the laser measuring tool; this will
expose the user to hazardous radiation exposure.
9. Do not attempt to change any part of the laser lens.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.