Platco

(A2LA Cert. No. 1554.01) Revised 2/2/2026 Page 1 of 2 SCOPE OF ACCREDITATION TO ISO/IEC 17025:2017 PLATCO 32450 English Turn Avon Lake, OH 44012 Richard Frye Phone: 440 835 1364 CALIBRATION Valid To: December 31, 2026 Certificate Number: 1554.01 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 calibrations1, 4: I. Dimensional Parameter/Equipment Range CMC2 (±) Comments Surface Plates3 – Flatness Repeat Reading (4 x 6) in to (8 x 12) in (10 × 8) in to (36 × 36) in Up to D = 480 0.002 in 37 µin 32 µin 23√D µin 23 µin Custom tram with planekator Planekator Autocollimator, D is the nominal length of the diagonal in inches Repeat-o-meter ____________________________________________ 1 This laboratory offers commercial calibration service 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 behavior of the customer’s device and to influences from the circumstances of the specific calibration.

(A2LA Cert. No. 1554.01) Revised 2/2/2026 Page 2 of 2 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 This scope meets A2LA’s P112 Flexible Scope Policy.