Certified Plastic
Shims (foils) provide an economical alternative
to
coated metal plate standards with a reduced
accuracy of ±2 µm (±0.08 mil). Gage performance can
be conveniently verified in the field or in the lab
on a regular basis as called for by some
international test methods. Shims are placed over a
smooth metal surface (zero plate) and a measurement
taken. These strips of flat polyester can be used to
adjust (optimize) a coating thickness gage in the
intended range of use directly over the customer's
uncoated substrate.
Certified Plastic
Shims are sold individually or as a complete set of
eight. Each Certified Shim is individually
serialized and labeled with its measured thickness
(mils and microns) obtained with measurement
equipment traceable to NIST. They are packaged in
their own plastic protective pouch. One Certificate
of Calibration showing traceability to NIST is
included with each shim or set of shims. Their
labeled thicknesses are accurate to within ±2 µm
(±0.08 mils). They are for use with electronic
magnetic, eddy-current and ultrasonic coating
thickness gages.