Dixon & Ryan

(A2LA Cert. No. 1564.01) 02/10/2026 Page 1 of 3 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 DIXON & RYAN CORP. 4343 Normandy Ct. Royal Oak, MI 48073-2201 Mark Ryan Phone: 248-549-4000 CALIBRATION Valid To: February 29, 2028 Certificate Number: 1564.01 In recognition of the successful completion of the A2LA evaluation process (including an assessment of the organization’s compliance with R205 – A2LA’s Calibration Program Requirements), accreditation is granted to this laboratory to perform the following calibrations 1, 5: I. Dimensional Parameter/Equipment Range CMC2, 4 (±) Comments Air Gages 0.000 01 in resolution 0.000 05 in resolution 0.0001 in resolution 11 µin 30 µin 58 µin Air master restrictors Bore Gages – 2 Point 0.000 05 in resolution 0.0001 in resolution 0.0005 in resolution 140 µin 150 µin 320 µin Adjustable height gage Calipers Up to 80 in (0.6R + 15L) µin Gage blocks, ring gage Calipers Gages (Inside / Outside) (0.2 to 10) in (290 + 32L) µin (110 + 13L) µin Gage blocks, ring gage Height master Comparator Gages (Mikrokator, Blanchette, Sheffield) 0.0001 in resolution 0.000 05 in resolution 0.000 02 in resolution 0.000 01 in resolution 0.000 005 in resolution 0.000 002 in resolution 58 µin 29 µin 12 µin 6.8 µin 4.5 µin 3.7 µin Gage blocks

(A2LA Cert. No. 1564.01) 02/10/2026 Page 2 of 3 Parameter/Equipment Range CMC2, 4 (±) Comments Electronic Amplifier and Probes 0.000 005 in resolution 0.000 01 in resolution 0.0005 in resolution 4.1 µin 6.5 µin 290 µin Gage blocks Hole Gages – 3 Point (Intrimiks, Holtest, Borematic) (0.2 to 10) in (100 + 21L) µin Ring gages Indicators: Dial, Test & Electronic, Digimatic Up to 12 in (0.6R) µin Gage blocks Indicator calibrator Height Gages3 (Including MicroHites, TesaHites, HiCal, Trimos, Linear Height) Up to 48 in (84 + 4L) µin (60 + 3L) µin Gage blocks Standard reference bar Height Gages Adjustable Column, Step Block, Cadillac Gage, Height Masters, Digi- Chek (1 to 24) in (67 + 8.0L) µin Gage blocks, electronic amplifier & probe End Standard, Length Standards / Micrometer Standards Up to 60 in (61 + 10L) µin Gage blocks, electronic amplifier & probe Micrometers Indicating, Snap/Groove Tubular, Mic heads Outside Inside Up to 60 in Up to 60 in (0.6R + 15L) µin (55 + 5.2L) µin Gage blocks Gage blocks, electronic amplifier and probe Pins/Plugs/ Outside Diameter Masters (Plain) Up to 12 in (55 + 25L) µin Gage blocks, electronic amplifier and probe Ring Gages (0.25 to 12) in (33 + 3.0L) µin ID/OD comparator and gage blocks

(A2LA Cert. No. 1564.01) 02/10/2026 Page 3 of 3 Parameter/Equipment Range CMC2 (±) Comments Surface Roughness Gage 20 µin Ra 120 µin Ra 2.7 µin Ra 3.4 µin Ra Surface patch Surface Finish / Roughness Specimen Standard (Patch) 16.1 µin Ra 119.5 µin Ra 3.4 µin Ra 3.5 µin Ra Surface roughness gage II. Mechanical Parameter/Equipment Range CMC2, 6 (±) Comments Torque Wrenches, Torque Tools (5 to 50) lbf·in (40 to 400) lbf·in (100 to 1000) lbf·in (25 to 250) lbf·ft (60 to 600) lbf·ft 2.0 % 2.0 % 2.0 % 2.0 % 2.0 % Torque tester ____________________________________________ 1 This laboratory offers commercial calibration service. 2 Calibration and Measurement Capability Uncertainty (CMC) is the smallest uncertainty of measurement that a laboratory can achieve within its scope of accreditation when performing more or less routine calibrations of nearly ideal measurement standards of nearly ideal measuring equipment. CMCs represent expanded uncertainties expressed at approximately the 95 % level of confidence, usually using a coverage factor of k = 2. The CMC of a specific calibration performed by the laboratory may be greater than the CMC due to the behavior of the customer’s device, to the environment (if the calibration is performed in the field) and to influences from the circumstances of the specific calibration. 3 Field calibration service is available for this calibration. Please note the actual measurement uncertainties achievable on a customer's site can normally be expected to be larger than the Calibration and Measurement Capability Uncertainty (CMC) found on the A2LA Scope. Allowance must be made for aspects such as the environment at the place of calibration and for other possible adverse effects such as those caused by transportation of the calibration equipment. The usual allowance for the uncertainty introduced by the item being calibrated, (e.g. resolution) must also be considered and this, on its own, could result in the actual measurement uncertainty achievable on a customer’s site being larger than the CMC. 4 In the statement of CMC, L is the numerical value of the nominal length of the device measured in inches, and R is the resolution of the device measured in micro inches. 5 This scope meets A2LA’s P112 Flexible Scope Policy. 6 In the statement of CMC, percentages are percentage of reading, unless otherwise indicated.