2.10.7.8. Measuring devices: For the purposes of this Division, the noise level must be measured with a Type 2 sound level meter for general use or a Type 1 sound level meter for precision purposes, in compliance with one of the following standards, applicable at the time of manufacture of the sound meter:(1) Sound Level Meters, CSA Standard Z107.1;
(2) Specification for Sound Level Meters, ANSI Standard S1.4A.