PMC Lone Star

(A2LA Cert. No. 1697.01) 9/08/2025 Page 1 of 5 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 PMC LONE STAR 38383 Willoughby Parkway Willoughby, OH 44094 Dave Maisch Phone: 440 953 3300 x224 CALIBRATION Valid To: August 31, 2027 Certificate Number: 1697.01 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 Straight Threaded Plug Gages – Pitch Diameter Pitch Diameter Major Diameter Lead Half Angle Length/Steps Up to 1.5 in Over 1.5 to 20 in Up to 20 in (1/2 to 120) TPI 360° Up to 10 in 70 µin (90 + 8D) µin (18 + 10D) µin 80 µin 4' 240 µin Three wire method Three wire method P&W Supermicrometer TM UMM UMM Height gage

(A2LA Cert. No. 1697.01) 9/08/2025 Page 2 of 5 Parameter/Equipment Range CMC2, 4 (±) Comments Straight Threaded Ring Gages – Pitch Diameter (Adjustable & Solid) Minor Diameter Lead Half Angle Length/Steps (0.05 to 20) in (0.05 to 20) in (1/2 to 120) TPI 360° Up to 10 in See Footnote 3 (150 + 6D) µin 170 µin 4.6' 240 µin Master plug Master plug UMM UMM Height gage or micrometer Tapered Threaded Plug Gages (V-Thread) – Pitch Diameter Pitch Diameter Major Diameter Truncation Lead Half Angle Length/Steps Taper Taper Standoff Up to 20 in Up to 20 in Up to 20 in Up to 20 in (1/2 to 120) TPI 360° Up to 10 in Up to 20 in Up to 20 in Up to 10 in (100 + 4D) µin (100 + 8D) µin (62 + 8D) µin 170 µin 80 µin 4' 240 µin (110 + 4D) µin (31 + 2D) µin 240 µin CMM Two wire method P&W Supermicrometer TM Wires & micrometer UMM UMM Height gage CMM Thread wires Master & depth micrometer or height gage

(A2LA Cert. No. 1697.01) 9/08/2025 Page 4 of 5 Parameter/Equipment Range CMC2, 4 (±) Comments Tapered Threaded Ring Gages (Buttress Casing Thread / Square Thread / ACME MOD Thread) – Taper Lead Half Angle Length/Steps Standoff Up to 20 in (1/2 to 120) TPI 360° Up to 10 in Up to 10 in (90 + 5D) µin 170 µin 4.6' 240 µin 240 µin CMM UMM UMM Height gage Master & height gage or gage blocks Straight Plain Plug Gages – Outside Diameter Up to 20 in (18 + 10D) µin P&W SupermicrometerTM Straight Plain Ring Gages – Internal Diameter (0.125 to 20) in (11 + 6D) µin ID comparator Thread Wires Up to 0.30 in (15 + 2D) µin P&W SupermicrometerTM Tapered Plain Plug Gages – Major Diameter Taper Length/Steps Standoff Up to 20 in Up to 20 in Up to 10 in Up to 10 in (48 + 5D) µin (110 + 3D) µin 240 µin 240 µin Two wire method Sine bar & indicator Height gage Master & depth micrometer or height gage

(A2LA Cert. No. 1697.01) 9/08/2025 Page 5 of 5 Parameter/Equipment Range CMC2, 4, 6 (±) Comments Tapered Plain Ring Gages – Minor Diameter Taper Length/Steps Standoff (0.125 to 20) in (0.125 to 20) in Up to 10 in Up to 10 in (120 + 10D) µin See Footnote 3 240 µin 240 µin Master & depth micrometer Bluing to master Height gage or micrometer Master & depth micrometer or height gage Dimensional Length – Measure 1D Up to 0.5 in (>0.5 to 4.25) in (>4.25 to 6) in 100 µin (100 + 5L) µin (95 + 18L) µin UMM Radius – Measure Up to 0.250 in 260 µin ContouReaderTM with software _____________________ 1 This laboratory offers commercial calibration services. 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 Functional test, primary uncertainty contributor is the uncertainty of the master plug used. 4 In the statement of CMC, L or D is the numerical value of the nominal length or diameter respectively, of the device measured in inches. 5 This scope meets A2LA’s P112 Flexible Scope Policy. 6 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.