Hemco Gage

(A2LA Cert. No. 2279.01) 11/18/2024 Page 1 of 3 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 HEMCO GAGE 455 Douglas Avenue Holland, MI 49424 Sharla Rouwhorst Phone: 616 396 4604 CALIBRATION Valid To: March 31, 2027 Certificate Number: 2279.01 In recognition of the successful completion of the A2LA evaluation process (including an assessment of the organization’s compliance with A2LA’s Calibration Program Requirements), accreditation is granted to this laboratory to perform the following calibrations 1, 4: I. Dimensional Parameter/Equipment Range CMC2, 3 (±) Comments Straight Thread Plugs – Major Diameter Simple Pitch Diameter Lead Half Angle Up to 6 in Up to 12 in Up to 5 in (5 to 12) in Up to 6 in > 2 in & 10 TPI or Coarser 180° (21 + 7.7L) µin (24 + 7L) µin (110 + 6.6L) µin (120 + 6.3L) μin (130 + 1.7L) μin 71 µin 4.3′ Mikrokator, gage blocks P & W Supermicrometer TM Model C Mikrokator, 3-wire method custom supermic, 3-wire method P & W Supermicrometer TM Model C Vertical lead checker Optical comparator

(A2LA Cert. No. 2279.01) 11/18/2024 Page 3 of 3 Parameter/Equipment Range CMC2, 3 (±) Comments Tapered Thread Rings – Pitch Diameter Pitch Diameter Standoff Minor Diameter (0.05 to 12) in (0.05 to 12) in (0.05 to 12) in (150 + 9.8L) µin (2400 + 160L) µin (120 + 5.7L) µin Master thread plug Master thread plug Master plain plug Tapered Plain Plugs – Outside Diameter Taper Up to 12 in Up to 12 in (98 + 3L) µin (140 + 4.3L) µin Custom Supermic Tapered Plain Rings – Inside Diameter Taper Up to 12 in Up to 12 in (120 + 2.7L) µin 97 µin Master plain plug Gage blocks, sine plate, electronic amp w/ probe Gage & Step Height Up to 12 in (96 + 4L) µin Gage blocks, electronic amp w/ probe ____________________________________________ 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 CMC, L is the length of the unit under test in inches. 4 This scope meets A2LA’s P112 Flexible Scope Policy.