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Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Related Standard	Status	Google Book
JJF 1078-2002	English	499	Add to Cart	Days<=4	Calibration Specificaiton for Optical Comparators for Angle Measurement	JJF 1078-2002	Valid	JJF 1078-2002

JJF 1078-2002
Calibration Specificaiton for Optical Comparators for Angle Measurement
National Metrology Technical Specification of the People's Republic
Optical Angle Measuring Comparator Calibration Specification
Released on.2002-04-15
2002-07-01 implementation
The General Administration of Quality Supervision, Inspection and Quarantine issued
Replace JJG203-1980
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine on April 15,.2002, and
Implemented on July 1,.2002.
Focal Point. National Geometric Angle Measurement Technical Committee
Drafting unit. Hunan Institute of Metrology and Testing Technology
This specification is interpreted by the focal point
The main drafters of this specification.
Xiao Xiaoping (Hunan Institute of Metrology and Testing Technology)
Bao Wei (Hunan Institute of Metrology and Testing Technology)
table of Contents
1 range (1)
2 Citations (1)
3 Overview (1)
4 Measurement characteristics (1)
4.1 Appearance (1)
4.2 Instrument optical axis and table perpendicularity (2)
4.3 Micrometer backhaul difference (2)
4.4 The micro-drum engraved line is consistent with the ruler line (2)
4.5 Deviation of the indication value of the micrometer reading (2)
4.6 Workbench flatness (2)
4.7 indication error (2)
5 Calibration conditions (2)
5.1 Environmental conditions (2)
5.2 Standards and other equipment for calibration (2)
6 Calibration items and calibration methods (2)
6.1 Appearance (2)
6.2 Verticality of instrument optical axis and table (2)
6.3 Micrometer backhaul (2)
6.4 Compliance between the micro-drum engraved line and the ruler engraved line (2)
6.5 Deviation of the indication value of the micrometer reading (2)
6.6 Flatness of the workbench (3)
6.7 indication error (3)
7 Expression of calibration results (4)
8 re-study interval (4)
Appendix A Calculation Example (5)
Appendix B Optical Angle Measuring Comparator Indication Error Measurement Uncertainty Evaluation (7)
Appendix C Calibration Certificate (inside page) format and content (16)
Optical Angle Measuring Comparator Calibration Specification
1 Scope
This specification applies to the calibration of optical goniometers.
2 Citations
This specification refers to the following documents.
JJF 1001-1998 General measurement terms and definitions
JJF 1059-1999 Measurement Uncertainty Evaluation and Representation
JB/T 6266-1992 Basic parameters of optical angle measuring comparator
Use of this specification should be done with the current valid version of the above cited documents.
3 Overview
The optical goniometer can measure the angle of metal and optical parts by comparison with standard or angle blocks.
Direct measurement at small angles also measures the linearity of the guide rails, the parallelism and verticality of the components.
The optical angle measuring comparator can be divided into two types. no micrometer and micrometer.
1-Workbench 2 - Vertical Arm 3 - Self-collimating light tube 4 - Eyepiece
4 Measurement characteristics
4.1 Appearance
The new optical angle measuring comparator shall have the manufacturer's name or trademark, model number, factory number and logo.