SCALES 

 2:1 3:1 



SCALES 

 4:1 5:1 



76r-95 



Given any two corresponding quantities, solve 

 for third by laying rule through points on prop- 

 er scales and read intersection on third scale. 



MANEUVERING BOARD 



Pric» 60 eonti (per pad of 50) 



325^ ft 3 SSSSSS S g DISTANCE in yards* 

 /I 'l ■ " i | I | I | I | i| i|i|i| — I | I | Relative or actual 



" ft 8SSS3S H g DISTANCE in miles 



SPEED in knots 

 Relative or actual 



Washington, DC, published Mjy, 1920, a! Hydrography Offic*. 

 undcf the authority of Iho SECRETARY OF THE NAVY 



FIGURE 11. 



New f\A-1i=atim: 4'A. Ed-. Apr, 1933 



-1th. Edition. April 1938 



No. 2665 a 



19 



