[Code of Federal Regulations]
[Title 27, Volume 1]
[Revised as of April 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 27CFR30.21]

[Page 716]
 
            TITLE 27--ALCOHOL, TOBACCO PRODUCTS AND FIREARMS
 
 CHAPTER I--BUREAU OF ALCOHOL, TOBACCO AND FIREARMS, DEPARTMENT OF THE 
                                TREASURY
 
PART 30--GAUGING MANUAL--Table of Contents
 
                     Subpart C--Gauging Instruments
 
Sec. 30.21  Requirements.


    (a) General. The proof of distilled spirits shall be determined by 
the use of gauging instruments as prescribed in this part.
    (b) Proprietors. Proprietors shall use only accurate hydrometers and 
thermometers that show subdivisions or graduations of proof and 
temperature which are at least as delimitated as the instruments 
described in Sec. 30.22.
    (c) Appropriate ATF officers. Appropriate ATF officers shall use 
only hydrometers and thermometers furnished by the Government. However, 
where this part requires the use of a specific gravity hydrometer, ATF 
officers shall use precision grade specific gravity hydrometers 
conforming to the provisions of Sec. 30.24, furnished by the proprietor. 
However, the appropriate ATF officer may authorize the use of other 
instruments approved by the appropriate ATF officer as being equally 
satisfactory for determination of specific gravity and for gauging. From 
time to time appropriate ATF officers shall verify the accuracy of 
hydrometers and thermometers used by proprietors.

(Sec. 201, Pub. L. 85-859, 72 Stat. 1358, as amended (26 U.S.C. 5204))

[T.D. ATF-198, 50 FR 8535, Mar. 1, 1985, as amended by T.D. ATF-438, 66 
FR 5481, Jan. 19, 2001]