SCALES 

 2:1 3:1 



38—1 57-1 



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I Division = 1 0' Miles . 

 ' I Division- 2 Knots 



/ 



7 



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m 



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180 



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72 —90 



-60 



to s o oi 



e 8 a, ssssseg88§ s g 



I ■ ... I i ,, ,'l,,,,l I„„l„'„l,.,.l„„l I I I I ! I I I I Ul I I I II I I 



LOGARITHMIC SCALE 



s 



s i i sssessiiilii ! ! § ISIil SIIII I § I IIIII 



\ 1 — i i i i 1 1| | I i ih'i 'l'l' h l ' I ' l « I ■ I ■ I ■ I » I ■ I ■ I « l ■ l • I ■ J ■ i ■ ■ ; i 1 1 h i' H iii jX I ' I R**" ■ «*«i 



S g DISTANCE In mites 



Given any two corresponding quantities, solve ™ ° ^««*-«o.9 a RttS!!: 



tor third by laying rule through points on prop- 

 er scales and read intersection on third scale. 



MANEUVERING BOARD i i I i J i Mir ...i ,,j<<X.,i,.„i,.„i „„i 



Price 6C cents (per pad of 50) 



SPEED in knots 

 Relative or actual 



Washington, DC. published May. 1920, il Kydrographlc Office. 

 under the authority of the SECRETARY OF THE NAVT 



FIGURE 15. 



Nr* Publication: 4th. U . Apr, 1533 iih Edition. April 1933 



No. 26«Sa 



27 



