THE USE OF THE BABCOCK TESTER 



13 



Diameter of Wheel in Inches Revolutions of Wheel Per Minute 



10 

 12 

 14 

 16 

 18 

 20 

 22 

 24 



1074 

 980 

 909 

 840 

 800 

 759 

 724 

 693 



In reading the per cent of fat place the lower point 

 of the dividers at the lower surface of the fat column, 

 and the upper point at the upper edge of the meniscus. 



FIG. 16. Correct method of holding dividers 

 in reading of the per cent of butter fat. 

 Resting the lower point of the dividers 

 on the tip of the thumb facilitates steadi- 

 ness. Balance scales for weighing cream. 

 Tin box for washing test bottles. 



Now placing the lower point of the dividers at the 

 zero mark, and reading the result at the upper point. 



