Pratt & Whitney Measurement Systems

(A2LA Cert. No. 2629.01) 03/02/2026 Page 2 of 3 Parameter/Equipment Range CMC2, 4 (±) Comments Universal Supermicrometer™ Model 5013 and Model 5043 Up to 2 in 6.1 μin Gage blocks Supermicrometer™ Model C3, Model PC3, and Model SPL3 Up to 1 in 17 μin Gage blocks Supermicrometer™ Model B3 Up to 1 in 19 μin Gage blocks Digital Measuring Machine – Lead Screw 3 Machine Button Bar Up to 1 in (1 to 81) in 17 μin (45 + 1.2L) μin Gage blocks Laser system Standard Measuring Machine – Lead Screw 3 Machine Button Bar Up to 1 in (1 to 81) in 19 μin (45 + 1.2L) μin Gage blocks Laser system Plain Cylindrical Ring Gages (0.020 to 14) in (6.2 + 0.57L) μin Labmaster Universal Calibration of Ball Bars (4 to 81) in (12 + 0.78L) μin Gage blocks, Labmaster Universal Calibration of Long Gage Blocks (4 to 20) in (20 to 40) in (6.9 + 0.77L) μin (6.6 + 0.84L) μin LMU 1000A, LMU 1000M, gage blocks Electro-Limit Indicator (0.100 to 0.110) in 3.4 μin Gage blocks

(A2LA Cert. No. 2629.01) 03/02/2026 Page 3 of 3 II. Mechanical Parameter/Equipment Range CMC2 (±) Comments Force System – Fixed Points3, Labmaster™ Universal, Laser Measuring Machine, Digital Measuring Machine, Standard Measuring Machine, Supermicrometer™ Model B, Model C, Model PC, and Model SPL -8 ozf -2 ozf 2 ozf 8 ozf 16 ozf 24 ozf 32 ozf 40 ozf 0.07 ozf 0.05 ozf 0.05 ozf 0.07 ozf 0.12 ozf 0.17 ozf 0.22 ozf 0.27 ozf Force gage ____________________________________________ 1 This laboratory offers commercial and field 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 behavio r of the customer’s device 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 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 actual 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 the CMC, L is the numerical value of the nominal length of the device measured in inches. 5 This scope meets A2LA’s P112 Flexible Scope Policy.