Regulation 28
(1)
Liquid capacity measures of maximum purported values between 8 gallons and one-sixth of a gill inclusive, shall be tested by transferring water from the local or working standard into the measure under test.
(2)
Measures—
(a)
with a lip or rim, shall be tested to the bottom of the lip or rim;
(b)
on which the purported value is defined by a line, shall be tested to the top of the line by taking the level of the water at the bottom of the meniscus.