Intercomparison Procedures for Gage Blocks Using Electromechanical Comparators.
Abstract
The widely used procedures for calibrating gage blocks by comparison with blocks of known length generally lack the redundancy needed to evaluate measurement uncertainty of the controls needed to monitor the process on a continuing basis. This report provides a detailed description for the systematized intercomparison of groups of four nominally equal gage blocks using an electromechanical comparator. Two of the blocks are unknowns and two are standards. The process provides the redundancy needed for evaluating uncertainty and for continuous monitoring. Gage block thermal effects, equalization time, handling techniques, and observation sequence are described.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1976
- Accession Number
- ADA077462
Entities
People
- C. D. Tucker
- J. S. Beers
Organizations
- National Institute of Standards and Technology