67 Pa. Code § 105.71. Approved stopwatches.

§ 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.

Source

   The provisions of this §  105.71 adopted August 26, 1977, effective August 27, 1977, 7 Pa.B. 2422; amended August 18, 1978, effective August 19, 1978, 8 Pa.B. 2311; amended October 27, 1978, effective October 28, 1978, 8 Pa.B. 2918; republished and compiled August 1, 1980, effective August 2, 1980, 10 Pa.B. 3199; amended November 19, 1982, effective November 20, 1982, 12 Pa.B. 3983; readopted December 4, 1987, effective December 5, 1987, 17 Pa.B. 5051. Immediately preceding text appears at serial pages (111322) to (111323).

Cross References

   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).

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