A. All measurements listed in the rules are given in metric units.
The following English System equivalents are to be used when no metric measuring device is available.
Under no circumstances shall players or officials use independent conversion calculations.
| Metric System |
English System |
| 10 meters | 32 feet 10 inches |
|
5 meters |
16 feet 5 inches |
| 3 meters | 9 feet 10 inches |
| 2 meters | 6 feet 6 inches |
| 1 meter | 3 feet 3 inches |
| 30 centimeters | 11 and 3/4 inches |
| 15 centimeters | 5 and 7/8 inches |
| 7 centimeters | 2 and 3/4 inches |
| 3 centimeters | 1.18 inches |
B. The guidelines for golf discs are set forth in the PDGA Technical Standards Document. To be
legal in PDGA competition, a disc must:
(1) have a saucer-like configuration with a flight plate unbroken by perforations and an inner rim depth which exceeds five percent of the outside disc diameter. The flight plate is defined as the upper (or dorsal) section of the disc;
(2) be made of solid, non-magnetic plastic material, without any inflatable components;
(3) not be less than 21 cm in outside disc diameter, nor exceed 40 cm in outside disc diameter; (4) not exceed 8.3 g per cm in outside disc diameter;
(5) not exceed a maximum weight of 200 g;
(6) be essentially as produced, without any post-production modifications which affect the weight or flight characteristics;
(7) be of a production-type disc available commercially to the public in numbers of at least 1500 in the case of a new mold or 500 in the case of a renamed disc out of a previously approved mold;
(8) present no unreasonable and no unusual danger to players or spectators;
(9) have a rim configuration rating of 26.0 or greater;
(10) pass the leading edge radius test with a 1/16" (1.6 mm) radius gauge;
(11) have a flexibility rating no greater than 27 lb. (12.25 kg); and
(12) have been certified for competition by the PDGA Technical Standards Committee.