What Are Height Gages and Height Masters?
Height gages and height masters are precision dimensional instruments used to measure, establish, or reference vertical dimensions from a known surface.
Height gages are measuring instruments commonly used on a surface plate to measure the height or location of part features. Depending on the design, they may use a vernier scale, dial indicator, digital display, or electronic measuring system. Height gages may also be equipped with scribers, indicators, probes, or other contacts for measurement and inspection.
Height masters are precision dimensional reference standards used to establish known heights or set and verify other dimensional measuring equipment. They typically provide a series of accurately established reference positions that can be used with height gages, indicators, comparators, bore gages, and other dimensional instruments.
Both are commonly used in machining, manufacturing, inspection, quality control, tool rooms, and calibration laboratories where accurate dimensional measurements are important.
Common Height Gages and Height Masters
SIMCO supports a range of height-measuring and reference equipment, including:
- Vernier height gages
- Dial height gages
- Digital height gages
- Electronic height gages
- Height masters
- Other supported height-measuring and reference instruments
Height Gage and Height Master Calibration Capabilities
SIMCO provides calibration for supported height gages and height masters across a range of sizes, resolutions, and configurations.
Depending on the equipment and required calibration scope, calibration may include:
- Visual inspection for damage, wear, or other conditions that could affect measurement
- Verification at multiple points across the applicable measurement range
- Comparison to appropriate dimensional reference standards
- Evaluation of repeatability, where applicable
- Verification of height master reference positions
- Evaluation of additional measurement characteristics when required by the equipment design or calibration procedure
- As-found and as-left results, when required
- Calibration certificates with measurement results, uncertainties, and traceability information
Calibration capability depends on the equipment type, range, resolution, accuracy requirement, and required service scope.
Why Height Gage and Height Master Calibration Matters
Regular calibration helps confirm that height gages and height masters continue to provide reliable dimensional measurements and reference values.
Calibration supports:
- Accurate measurement of heights and feature locations
- Reliable dimensional inspection and part verification
- Confidence in setup and comparative measurements
- Traceability of dimensional measurements to recognized reference standards
- Identification of measurement error or changes in equipment performance
- Quality-system and audit requirements
- Evaluation of equipment suitability for its intended measurement application
Because height masters may be used to set or verify other dimensional measuring equipment, their performance can affect measurements made with the instruments that rely on them.
Calibration Standards and Traceability
SIMCO provides height gage and height master calibration using appropriate dimensional reference standards and documented calibration procedures.
Calibration results are supported by metrological traceability to the SI, typically through NIST or other national metrology institutes.
For accredited calibrations, measurement uncertainty is evaluated and reported in accordance with ISO/IEC 17025 requirements. Where a statement of conformity is provided, the applicable decision rule is documented as required.
SIMCO calibration services support applicable requirements from:
- ISO/IEC 17025
- ANSI/NCSL Z540.1
- Manufacturer specifications
- Customer-defined calibration requirements
Why Choose SIMCO for Height Gage and Height Master Calibration?
SIMCO provides dimensional calibration services for precision measuring and reference equipment used throughout manufacturing, inspection, engineering, and quality operations.
Customers rely on SIMCO for:
- ISO/IEC 17025 accredited calibration capabilities
- Experienced dimensional calibration technicians
- Documented measurement uncertainty and traceability
- Calibration records that support quality and audit requirements
- Service for a broad range of dimensional measuring equipment