296 



Records of Measures 



[From this table it appears that D is supposed to contain 36 "inc. el. 

 Now, by Art. 655, D contains 26-3 "globular inches," which is equal to 41 

 "circular inches," or 36-7 "square inches."] 



[Specimen of Measurements of thickness by dividing engine.] 

 590] 2nd rosin plate, [Arts. 371, 500] mean diameter 5-6. 



M. 23. At 2- 1 10 knobs coincided, 



2-306 1 



05 1 center 2-3057 

 06 1 



} one inch [from center] 2-3045 



2-110 come. 

 Mean thickness =-195. 



591] M. 32. Measures of thickness of crown glass [Arts. 370, 500] measured 

 in the middle of each i6 th square part, the numbers being placed in the same 

 situation as the squares. 



C. At i-88r the knobs coincided. 



1-944 48 51 48 



48 52 52 44 



53 53 46 38 



53 46 40 34 

 mean 1-947, thickness -066. 



