[Code of Federal Regulations]
[Title 27, Volume 1]
[Revised as of April 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 27CFR30.61]

[Page 744]
 
            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 E--Prescribed Tables
 
Sec. 30.61  Table 1, showing the true percent of proof spirit for any indication of the hydrometer at temperatures between zero and 100 degrees Fahrenheit.

    Note. The tables referred to in this subpart appear in their 
entirety in the ``Gauging Manual Embracing Instructions and Tables for 
Determining Quantity of Distilled Spirits by Proof and Weight'' which is 
incorporated by reference in this part (see Sec. 30.1).


    This table shows the true percent of proof of distilled spirits for 
indications of the hydrometer likely to occur in practice at 
temperatures between zero and 100 degrees Fahrenheit and shall be used 
in determining the proof of spirits. The left-hand column contains the 
reading of the hydrometer and on the same horizontal line, in the body 
of the table, in the ``Temperature'' column corresponding to the reading 
of the thermometer is the corrected reading or ``true percent of 
proof.'' The table is computed for tenths of a percent.
    Example.   

Temperature,  deg.F............................................       75
Hydrometer reading.............................................      193
True percent of proof..........................................    189.5



Where fractional readings are ascertained, the proper interpolations 
will be made (see Sec. 30.23). If the distilled spirits contain 
dissolved solids, temperature-correction of the hydrometer reading by 
the use of this table would result in apparent proof rather than true 
proof.

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