DeFelsko Certified Plastic Shims

Certified Plastic Shims (foils) provide an economical alternative to coated metal plates. They have a reduced accuracy of ±2 µm (±0.08 mil). A coating thickness gage measures shim thickness when this shim is placed over a smooth metal surface (zero plate).
Alternatively, they can be placed over an uncoated metal substrate. They are not suitable for use with magnetic pull-off gages.