67 Pa. Code § 105.71 - Approved stopwatches

The following types of stopwatches are approved by the Department for use in timing the rate of speed of vehicles:

(1) Mechanical stopwatches. A mechanical stopwatch shall comply with the following standards:

(i) The face shall be fully graduated, with minimum graduations of 1/5 second.

(ii) The stopwatch shall be accurate to the equivalent of plus or minus 15 seconds per 24-hour period.

(2) Electronic stopwatches. An electronic stopwatch shall comply with the following standards:

(i) The common crystal frequency shall be 32,768 Hz with a measured frequency within plus or minus 3 Hz, or approximately .01% of the standard frequency.

(ii) The stopwatch shall be accurate to the equivalent of plus or minus 9 seconds per 24-hour period.

Notes

67 Pa. Code § 105.71

The provisions of this § 105.71 adopted August 26, 1977, effective 8/27/1977, 7 Pa.B. 2422; amended August 18, 1978, effective 8/19/1978, 8 Pa.B. 2311; amended October 27, 1978, effective 10/28/1978, 8 Pa.B. 2918; republished and compiled August 1, 1980, effective 8/2/1980, 10 Pa.B. 3199; amended November 19, 1982, effective 11/20/1982, 12 Pa.B. 3983; readopted December 4, 1987, effective 12/5/1987, 17 Pa.B. 5051.

This section cited in 67 Pa. Code § 105.72 (relating to equipment approval procedure); 67 Pa. Code § 105.94 (relating to required equipment); and 67 Pa. Code § 105a.4 (relating to system and speed timing device use and certification).