(a) Settings and adjustments on automatic temperature compensators shall be performed utilizing ‘‘Table 6’’ of the American Edition of the American Society for Testing Materials—1P, Petroleum Measurement Tables. Appropriate thermal expansion rate determinations shall be performed in one of the following manners:
- (1) A statement by the supplier to the dealer indicating the API specific gravity number or thermal expansion rate.
- (2) Determination by a hydrometer designed to determine API specific gravity.
- (3) Utilization of API No. 36 for No. 2 Fuel Oil.
- (b) Temperature determinations in adjusting an automatic temperature compensator shall be accomplished by the use of a liquid in glass mercury thermometer accurate to within ± 1°F.