Certified Plastic Shims (foils) provide an economical alternative to coated metal plates. They have a reduced accuracy of 2 m (0.08 mil). A coating thickness gage measures shim thickness when this shim is placed over a smooth metal surface (zero plate).
Non-Certified Plastic Shims (foils) provide a quick operational check of the instrument and they allow the user to perform practice measurements when placed over metal.
Alternatively, they can be placed over an uncoated metal substrate. They are not suitable for use with magnetic pull-off gages.
Certified Plastic Shims
Non-Certified Plastic Shims
DeFelsko Certified Plastic Shims are available in the following thicknesses (all thicknesses are approximate):
| Order Code | Approximate Thickness | Color |
| STDCS1 | 25 m (1 mil) | Orange |
| STDCS2 | 50 m (2 mil) | Red |
| STDCS3 | 75 m (3 mil) | Green |
| STDCS5 | 125 m (5 mil) | Blue |
| STDCS10 | 250 m (10 mil) | Brown |
| STDCS20 | 500 m (20 mil) | Yellow |
| STDCS40 | 1000 m (40 mil) | White |
| STDCS60 | 1500 m (60 mil) | Black |
| STDCSS | Complete set of 8 | |
DeFelsko STDSHIMS Non-Certified Plastic Shims available as a set of 5:
| Approximate Thickness | Color | Accuracy |
| 25 m (1 mil) | Orange | 20% |
| 50 m (2 mil) | Red | 10% |
| 125 m (5 mil) | Blue | 5% |
| 250 m (10 mil) | Brown | 5% |
| 500 m (20 mil) | Yellow | 5% |
Note: While DeFelsko inspects non-certified plastic shims to ensure they are within the nominal stated accuracy, they are not traceable to any national or international standard.
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