SCALES 

 4:1 5:1 



IT 76 r*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 



Price 60 c»nt« (per peel of 50) 



8 a S 8 338 K 8 DISTANCE In miles 



SPEED in knots 

 Relative or actual 



Washington. D.C., published Mjy. 1920, at Hydragraphle Office, 

 under the authority of the SECRETARY OF THE NAVY 



N.-n Publication: 4th. Ee. Apr. 1938 4th. IViickio. Aprfl 1933 



No. 2885 •> 



FIGURE 23. 



43 



