Western Gage

Part 1 of 4

(A2LA Cert. No. 4174.01) 1/23/2025 Page 1 of 3 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 WESTERN GAGE CORP 3316A Maya Linda Ste. A Camarillo, CA 93012 Steve Harrington Phone: 805 445 1410 x 31 CALIBRATION Valid To: March 31, 2027 Certificate Number: 4174.01 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, 6: I. Dimensional Parameter/Equipment Range CMC2, 3, 7 (±) Comments ID – Plain Ring Gages (0.04 to < 0.7) in (0.7 to < 4) in (4 to 13.25) in (0.23 to <1) in (1 to <4) in (4 to 14) in 5 µin (3.4D + 2.5) µin (3.6D + 1.7) µin 7 µin (5.9D - 0.3) µin (4.7D - 5.0) µin Federal 136 B P&W Labmaster TM OD – Plain Plug Gages and Setting Discs Up to < 0.7 in (0.7 to < 4) in (4 to 12) in (0.23 to < 1) in (1 to < 4) in (4 to 13) in 5 µin (3.4D + 2.4) µin (3.1D + 9.4) µin 7 µin (5.9D + 0.2) µin (4.6D - 4.2) µin Federal EHE 1053 P&W Labmaster TM Length – Measure Outer Planes Up to < 0.7 in (0.7 to < 4) in (4 to 12) in 5 µin (3.3L + 2.9) µin (3.5L + 2.4) µin Federal EHE 1053

Part 2 of 4

(A2LA Cert. No. 4174.01) 1/23/2025 Page 2 of 3 Parameter/Equipment Range CMC2, 3, 7 (±) Comments Length – Measure (cont) Inner/Outer Planes (0.23 to < 1) in (1 to < 4) in (4 to 14) in 6 µin (6.0L - 0.2) µin (4.7L - 5.3) µin P&W LabmasterTM Air Gaging – Micro II(i) Dimensional Readout, SMO-Air4 Air Plug Gaging System 4, 5 Air Ring Gaging System4, 5 Up to 0.0003 in tolerance (> 0.0003 to 0.003) in tolerance (0.059 to 8.3) in (0.061 to 7.5) in 12 µin 20 µin (9.2D + 3.1) µin (9.3D + 2.9) µin Lab master, WGC spec 71, 72 orifice set Lab master, WGC spec 63, 64 orifice set Master ring gage Master plug gage Magnification Orifice Up to 0.0003 in tolerance (> 0.0003 to 0.003) in tolerance 10 µin 19 µin Grand master, WGC spec 71, 72 orifice set, Micro II(i) Grand master, WGC spec 63, 64 orifice set, Micro II(i) ________________________________ 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 or 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 actual measurement uncertainty of a specific calibration performed by the laboratory may be greater than the CMC due to the behavior of the customer’s device and to influences from the circumstances of the specific calibration. 3 In the statement of CMC, D and L are the numerical values of the nominal diam eter or length of the measurand in inches, respectively. 4 The contribution to the uncertainty from the device under calibration are excluded from the CMC. 5 Minimum CMC is 6 micro-inches. 6 This scope meets A2LA’s P112 Flexible Scope Policy.

Part 3 of 4

(A2LA Cert. No. 4174.01) 1/23/2025 Page 3 of 3 7 The type of instrument or material being calibrated is defined by the parameter. This indicates the laboratory is capable of calibrating instruments that measure or generate the values in the ranges indicated for the listed measurement parameter.