The measurement assurance program - A case study: Length measurements. Part 1: Long gage blocks (5 in to 20 in)
The differences between the methods of traditional metrology and the measurement assurance programs are briefly discussed. The historical data relative to long gage blocks (5 in to 20 in) are analyzed to provide a basis for comparison with results from new measurement processes formulated in accordance with the philosophies of the measurement assurance programs. The results from the new processes are in agreement with the work of the past. The current length values assigned and associated uncertainties are shown for selected long gage blocks used in the dissemination of length by the National Bureau of Standards. These long gage blocks are a part of a growing collection of similar well characterized artifact standards for use in comparative measurement processes. The methods and techniques used in developing the new measurement process are discussed in some detail.
Final Report National Bureau of Standards
- Pub Date:
- November 1975
- Distance Measuring Equipment;
- Engineering (General)