Section 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.

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).

Notation

Cross References

This section cited in 67 Pa. Code § 105.72 (relating to equipment approval procedure); and 67 Pa. Code § 105.94 (relating to required equipment).