Checkline PT-RTR - Manual (Page 10)

7
The probe contains two measuring surfaces that can become
contaminated with dust particles and residual tape adhesive. It is
therefore a good idea to clean the probe regularly with the included
cleaning card. Cleaning is essential prior to performing a probe
zero (pg. 10) or a verification of accuracy (pg. 8). It is best
performed when the Gage is powered down.
With the Gage powered-down, swipe the card through the opening
a few times while firmly pressing both probe buttons.
The card can also be used to clean the surfaces of analog spring
micrometers. Replacement cards are available from your dealer.
Cleaning Card
Measure
Insert the burnished replica tape into the
measurement opening. Ensure the tape is
properly positioned so that the burnished region
is centered within the opening in the probe with
the adhesive (sticky) side down.
To position the tape, move the tape to the back of the probe and
align the two dots (printed on replica tape) with arrows on both
sides of the measurement opening.
If you are using older tape that does not have the printed dots,
simply align by centering the tape within the measurement
opening.
Once positioned, firmly press both probe buttons simultaneously
and hold until the Gage beeps and the measurement is displayed.
During measurement, a constant anvil pressure is applied to the
replica tape regardless of how hard the two buttons are pressed.
The Gage automatically subtracts the 50.8 μm (2 mil) of
incompressible polyester film. No further adjustments are required.
Align dots with arrows on probe