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METROLOGY - DIMENSIONAL CAPABILITIES |
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PARAMETER |
UNITS |
RANGE |
ACCURACY/ UNCERTAINTY |
TECHNIQUE |
REMARKS |
| LENGTH: Gage Blocks |
inches (in) milli- meters (mm) |
to 20.0000 in to 100.00 mm |
Expanded Uncertainty is determined for each block at time of calibration. Exp. Uncertainty, U, @ k=2 | Comparison Measurement to NIST calibrated Master Blocks | Laboratory Master Gage Blocks* Federal Gage Block Comparator Models 130B-24, 130B-16 with custom software |
| LENGTH: |
inches (in) |
0 to 12.00000 in | ± 16 m in | Direct Measurement | SIP Measuring Machine Model 305 |
| 0 to 120.0000 in | ± 100 m in + 2 m in/in | Direct Measurement | Starrett Webber Multi Check with HP Laser | ||
| 0 to 12.0000 in | ± 4 m in | Comparison Measurement, Internal | Federal Horizontal Master Comparator Model 136B-3 | ||
| FLATNESS: Optical Flats and Parallels |
inches (in) |
Max. Diameter: 5 in Max. Height: 7.75 in |
3 m in | Non-Contact Measurement | Davidson Plano-Interferometer with NIST Calibrated Master Optical Flat |
| NOTES: *Maintained by NIST. All processes utilize SPC and specially designed software to provide the most accurate and reliable measurement uncertainties. | |||||