[Code of Federal Regulations]
[Title 27, Volume 1]
[Revised as of April 1, 2005]
From the U.S. Government Printing Office via GPO Access
[CITE: 27CFR30.21]

[Page 809]
 
            TITLE 27--ALCOHOL, TOBACCO PRODUCTS AND FIREARMS
 
 CHAPTER I--ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, 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]