Checkline AD-100 - Manual (Page 4)

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2.0 Testing Procedure
1. Place the instrument on the material
to be tested. The AD-100 can be used at
any angle, it does not need to be vertical.
NOTE:
If the gauge is equipped with the
Memory Pointer option make sure the
pointer is returned to zero before starting.
2. Press the foot of the gauge firmly
against the specimen, but not so
firmly as to imbed the foot into the
surface of the material.
3. Maintain pressure for 2 to 3 seconds.
The dial hand gives the reading in
durometer points.
ImPOrTaNT:
After the initial reading has
been noted, continue maintaining pressure
for several more seconds. Creep or cold-flow of the specimen, if present,
will be evident by receding action of the dial hand.
4. Repeat above steps for each use.
An example of a properly noted durometer reading:
“Durometer A 61, Creep 7 at 15 seconds, 73°F.”