ITF

52 8. DIMENSIONS (ITF CS 04/02) The court markings define the playing area of the surface and provide consistency with the Rules of Tennis and between courts. The position of the court markings and net are checked using a distance-measuring device. Apparatus Test apparatus consists of: Distance-measuring device, calibrated to ± 0.05%, such as a laser distance meter or a steel tape. Calibration of apparatus Check the distance-measuring accuracy of the apparatus against a known standard annually. Test procedure 1. Using the calibrated device, measure each of the distances listed in Table 5 (refer also to Figure 7). Follow the same procedure on both sides of the net to complete the court. 2. Repeat the measurements in reverse order. Check any measurement for which the discrepancy between the two values exceeds half of the applicable tolerance. Note: All measurements of court markings should be made to the outside edge of lines, except those made to the centre serviceline and the centre mark, which are made to the centre of those lines. Measurements from the net should be taken using a plumb line hung from the top of the net, or a line tensioned between the centres of the net post holes. Calculation of results Calculate the mean of the two values measured for each distance. The tolerance for each test value (measured distance) corresponds to 0.1% of the distance measured, with a minimum tolerance of ± 5 mm. 10 mm is added to the tolerance for measurements involving the net, due to the thickness and movement of the net and the uncertainty in the measurement of the net posts. Recommendations Refer to Table 5.

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