10 
BULLETIN 1065, U. S. DEPARTMENT OF AGRICULTURE. 
3. Keplace kettle filled with the distilled water and covered with 
the slicker plate, omitting the standard weight, on scoop bracket of 
balance without spilling water or disturbing weights previously set, 
release the arrest or damper, and let the pointer on balance come 
to rest. 
4. If when the pointer has ceased oscillating it indicates an exact 
balance, the capacity of the kettle is correct and this test is satis- 
factorily completed. 
5. If the pointer comes to rest at any other position than the 
center of the graduated arc* or center of balance, place the tolerance 
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Fig. 7. — Apparatus required for determining- the accuracy of the quart-sized kettle. The 
standard weight shown on top of the glass slicker plate over the test kettle is equal 
in weight (1,098.08 grams) to 1 quart of water at 20° C. (68° F."». 
weight (1 gram) on the light side of the balance. If the toler- 
ance weight is sufficient to swing the pointer to or across the center 
mark, the error in kettle capacity is within the allowable tolerance 
and the kettle may be used. But should the tolerance weight be 
insufficient to swing the pointer to the center of its arc, or bring 
the scale to balance, the error in the kettle capacity exceeds the 
allowable tolerance and the kettle should not be used in making 
official tests. 
To insure a correct test it is of course essential that the balance 
used in making the test be sufficiently sensitive to indicate a change 
in the pointer or beam reading when the tolerance weight is added 
to or taken from either arm of the loaded balance. 
