Accuracy Tests - Leica DISTO classic User Manual

Accuracy tests on the DISTO for users certified to
ISO 900...:
You can perform your own accuracy tests on the
DISTO to meet the requirements of ISO 900... for
measuring equipment.
Take a fixed, invariable, and conveniently
accessible distance of about 1m to 10m, such as
the width of a window opening or of a room.
Measure it ten times.
Determine the magnitude of this distance with a
means of measurement that is monitored by a
national, accredited calibration institute (traceability
back to national standards).
Determine the amount that the measurements vary
from the nominal distance, and compute the
standard deviation (page 59).
Record the standard deviation and set a date for the
next test. Repeat these tests at frequent and regular
intervals, also before and after important measuring
jobs.
Affix an adhesive label on the DISTO for accuracy
tests of measuring equipment and keep a detailed
record of the test procedure.
Your DISTO meets the specified accuracy if
standard deviation remains smaller or equal to the
typical specified value.
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