Glastonbury Southern Gage TN

(A2LA Cert. No. 1553.02) 04/12/2024 Page 1 of 3 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 GLASTONBURY SOUTHERN GAGE TN 46 Industrial Park Road Erin, TN 37061 Stephen Prout Phone: 800 251 4243 CALIBRATION Valid To: April 30, 2026 Certificate Number: 1553.02 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 Plain Rings – Internal Diameter (0.06 to 4) in (4 to 22.5) in (7.8 + 1.8L) µin (2.8 + 3.0L) µin Federal 136 B-3, gage blocks Plain Cylindrical Plugs and Discs – External Diameter (0.01 to 5.5) in (0.01 to 4) in (4 to 20) in (7.8 + 2.4L) µin (7.5 + 1.8L) µin (2.9 + 3.0L) µin Heidenhain DiaLectron, gage blocks External Straight Thread Plugs – Pitch Diameter (0.5 to 120) TPI Major Diameter (0.047 to 3) in (3 to 20) in (0.047 to 3) in (3 to 20) in 41 µin (32 + 1.9L) µin 32 µin (20 + 2.3L) µin Mikrokator or comparator, gage blocks and wires ULM and wires Mikrokator or comparator and gage blocks ULM

(A2LA Cert. No. 1553.02) 04/12/2024 Page 2 of 3 Parameter/Equipment Range CMC2, 3 (±) Comments External Tapered Thread Plug – Pitch Diameter 0.750 TPF, (0.5 to 120) TPI Major Diameter (0.047 to 3) in (3 to 12) in (0.1 to 3.0) in (3.0 to 12) in 62 µin (94 + 0.8L) µin 56 µin (91 + 0.8L) µin Mikrokator or comparator, gage blocks, taper block and wires Comparator, gage blocks, taper block, and wires Mikrokator or comparator, blocks and taper block Comparator, blocks and taper block Plain Tapered Plugs – External Diameter 0.75 TPF All Tapers (0.01 to 3) in (3 to 12) in (0.01 to 8) in 56 µin (91 + 0.8L) µin (92 + 0.5L) µin Mikrokator or comparator, gage blocks and taper block Comparator, gage blocks and taper block Comparator, gage blocks and sine bar Length – Between Two Planes (0.01 to 12) in (0.01 to 26) in (120 + 6.7L) µin (27 + 2.4L) µin Sylvac DiaLectron, gage blocks External Thread Lead Straight and Tapered (1/2 to 120) TPI 47 µin Optical comparator External Thread Flank Straight and Tapered (0 to 180) ° 4.0′ Optical comparator

(A2LA Cert. No. 1553.02) 04/12/2024 Page 3 of 3 Parameter/Equipment Range CMC2, 3 (±) Comments Internal Straight Thread Ring – Pitch Diameter (0.5 to 120) TPI Minor Diameter (0.06 to 3) in (3 to 12.5) in (0.04 to 0.40) in (0.40 to 12.5) in 41 µin (32 + 1.9L) µin 94 µin (94 + 0.3L) µin Certificate states the ring is sized to a plug; w/ the plug’s uncertainty given Taper pins and micrometers Bore gages Internal Tapered Thread Rings – Pitch Diameter 0.75 TPF, (0.5 to 120) TPI Minor Diameter (0.06 to 3) in (3 to 12) in (0.040 to 3.0) in (3.0 to 12.0) in 130 µin (150 + 0.7L) µin 87 µin (110 + 0.9L) µin Tapered plug and indicator Tapered plug and indicator Plain Tapered Rings – Internal Diameter 0.75 TPF All Tapers (0.04 to 3) in (3 to 12) in (0.04 to 8) in 87 µin (110 + 0.9L) µin (110 + 0.5L) µin Tapered plug and indicator ___________________________________________ 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, L is the numerical value of the nominal length of the device measured in inches. 4 This scope meets A2LA’s P112 Flexible Scope Policy.