SCALES 

 2:1 3:1 



: \ . ■ 



•• ...\- ' 



I , , , , i ,,,.1 1 1 1 ■...! i I i hlil 



SCALES 

 4:1 5:1 



r-35 



1-15 

 — 10 

 — 5 

 -0 t 



ss gssss§§ s 



I I„„l„„l„„ I I 1 1 1 1 .1.1 I 1 1 1 1 1 



LOGARITHMIC SCALE 



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 



Prico 60 cents (per pad of 50) 



TIME in minutes 



S S 



RS888S S S 8 §?§§§§!iss 8 sSSSSSf 8 5 



g § 8 §§§§§! i!!!S * SSlSlSlSSlls s ! SSSSS? 3 g DISTANCE In yards 



I l I i | i | 1 I I IM ' I ' I ' H ' M l ' I' l ' I 'I' I ' l ' M 'I'I 'l"" ! ' I ' h l' 1 '1' 1'1 ' I ' I Relative or actual 



1 ".,""" »»"-«»a a R aStSSSS R .8 DISTANCE In miles 



I I I I I I I ll llllllll 



K g S S S SJ 



I ....1 1 1 



SPEED In knots 

 Relative or actual 



Washingloo. DC. published Mey. 1920. at Hydrograplvc Off.ce. 

 under the euthsrity of the SECRETARY Or THE NAVY 



FIGURE 34. 



New PucJIcaucn: 4u\ Ed. Apr. 1938 



4th.Z^t^mApHll93S 



No.2M5av 



67 



