Proficiency Tests
Dimensional Measurement
Angle Measurement # 1
The Angle Measurement 1 test is intended to validate the calibration laboratory’s ability to calibrate dimensional angle standards and perform angular measurements on dimensional artifacts. The artifacts consist of shop grade angle blocks of various values , with a measurement uncertainty of 1.9 arc minutes.
Caliper # 1
The caliper # 1 test is intended to validate the calibration laboratory’s ability to calibrate calipers. The artifacts consist of a six-inch analog dial caliper with 0.001-inch resolution and two 8-inch digital calipers with 0.0005-inch resolution.
Depth Micrometer # 1
Validates the calibration laboratory’s ability to calibrate depth micrometers. The artifact is a 0 to 4 inch adjustable rod depth micrometer. The depth micrometer has 0.001 inch resolution.
Dial Indicator # 1
Validates the calibration laboratory's ability to calibrate dial indicators. The artifacts consist of a 1 inch analog dial indicator with 0.001 inch resolution and a 0.5 inch digital indicator with 0.00005 inch resolution.
Micrometer # 1
The Micrometer # 1 test is intended to validate the calibration laboratory’s ability to calibrate outside micrometers. The artifacts consist of three 0 to 1 inch outside micrometers. One micrometer has 0.001” resolution, one micrometer has 0.0001” resolution, and one micrometer is digital with 0.00005” resolution.
Microscope # 1
Validates the calibration laboratory’s ability to calibrate toolmakers microscopes and general microscopes. The proficiency test consists of reticule calibration and stage calibration of the microscope. The artifact is a Mitutoyo TM-101 toolmakers microscope. Participants will be required to travel to our proficiency test headquarters in Columbia City, Indiana to participate in this proficiency test, bringing their toolmakers microscope calibration equipment and procedures.
Optical Comparator # 1
The Optical Comparator 1 test is intended to validate the calibration laboratory’s ability to calibrate optical comparators. The proficiency test consists of linearity calibration in the X and Y axis of the optical comparator. The artifact is a Starrett HB 400 with Quadracheck 2000, located at our proficiency test headquarters in Columbia City, Indiana. Participants will be required to travel to Columbia City Indiana to participate in this proficiency test, bringing their optical comparator calibration equipment and procedures.
Steel Rule # 1
The Steel Rule 1 test is intended to validate the calibration laboratory’s ability to calibrate rulers and length scales. The artifact is a commercially available Mitutoyo 182-126 Steel Rule with a 0.01 inch resolution.
Surface Plate # 1
The Surface Plate 1 test is intended to validate the calibration laboratory’s ability to calibrate Surface Plates. The artifact is a 2 by 3 foot Rahn Granite Surface Plate with a reference value uncertainty of 40 microinches for flatness and 12 microinches for repeatability. The test is performed in our facility in Columbia City, IN.
Surface Roughness # 1
The Surface Roughness 1 test has been developed to verify the best measurement capability of the participating laboratory for the parameter of Average Surface Roughness (Ra). This proficiency test is suitable for both calibration laboratories that perform calibration of surface roughness analyzers and testing laboratories that perform surface roughness measurements.
Thread Ring Gage # 1
This Interlaboratory Comparison is an initial study to determine whether calibration laboratory technicians can correctly identify which thread gage that a thread ring gage has been set with. Customers who select this service can validate their ability to set thread ring gages in a manner that is consistent with other calibration service providers. The artifacts are a thread ring gage M10-1.5 6g GO, and three M10-1.5 6g set plug gages. All three gages were specifically manufactured to be within tolerance, but have significant pitch diameters. All gages were manufactured by Atlas Thread Gage Inc.