The National Measurement System for Length and Related Dimensional Measurements,Part 1.

摘要

The determination of length and related dimensional measurements constitute the largest group of measurements made in science,manufacturing and technology. We have shown that length and related dimensional measurements have impact upon many areas of the economy. We have also shown that the National Measurement System is viable and is adaptable in conforming to the changing requirements of industry. The greater accuracy requirements of some industries brought new measurement techniques into use, e.g. the fringe counting laser interferometer systems now used in many tool rooms and metrology laboratories. We have found no deficiencies in the system but only in individuals or the measurement technique that they use as shown in the comparison measurement on audit packages that were made by the various standards laboratories.