Martel Electronics 320 - Manual (Page 56)

SERVICE INFORMATION
Return for calibration, recertification or repair.
It is recommended that each calibrator be recalibrated
and/or recertified on a 6 month basis, against precision
standards that are traceable to the National Institute of
Standards and Technology.
All returns should include a statement on the work
requested and the exact address to which the unit
should be returned. Beta Calibrators will return units
on a prepaid basis.
RETURN AUTHORIZATION
All equipment and/or parts to be returned to Beta
Calibrators for repair or credit must have a Beta
Calibrators Return Authorization Form. This form
will be issued by the Beta Calibrators Customer
Service (972) 241-2200 for credit, or the Beta
Calibrators Service Department (800) 537-2181 for
repair.
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