Type approval shall not be required when:
- (a) In the case of an individual device, the Commissioner permits the sealing of the device for testing purposes, or to prevent economic hardship;
- (b) The Commissioner deems the device or piece of equipment to be of such simple design and predictable response that considerations beyond the accuracy and correctness of individual devices are unnecessary; or
- (c) The device has received a certificate of conformance in accordance with the national type evaluation program.
(Effective July 25, 1984)