The scale on the dial of the pressure or altitude gauge on a hot water heating boiler shall be graduated approximately to not less than _____ times the maximum allowable working pressure.
a. 0.5
b. 1
c. 1.5
d. 2
e. 2.5
Answer: C
The scale on the dial of the pressure or altitude gauge on a hot water heating boiler shall be graduated approximately to not less than _____ times the maximum allowable working pressure.
a. 0.5
b. 1
c. 1.5
d. 2
e. 2.5
Answer: C