SCALES 

 2:1 3:1 

 38 — 1 57- 



36- 



0— I 0— • 



I Division =3 Knots 

 y ■] Division = 100 Yds /Min. - 



S' 



-/77 



.*. 



ft 



*/■».... .' 



SCALES 

 4:1 5:1 



'/'••■.. / ''"■■/"" \ >;£"Y v-i / / ''^ //■■■/' \| ■•••■■■■' '■• 



:■•' 7--.. /'"■■•. .A \$fls**»Hik*A' /■■■/■■■'•■ .-¥ '•■ '••.--• 

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it .■' s / ."'-/■-.. a A. "-■■/"'■•■. '"■•. V-vA-/ •/,■/ A -, \ .:■■-"" \ • *. 



^p ; ■-; / / A'"*--/ iy&z&p&m f44W(^^^'^f\^ Q -P : H \ ' .\ '• 



^_ j ■■■■•■••;.„ : AA /■ J '\^^Ph/ a "^f ■ " : - "" 



: -'*A ■■•■■''/ v ' • * ■ ? 



'_if_j __/ _ ; J - t „- 



.77 x • / *; ^r: — * * s ro,-*z 



J|. ^ ■■ \ \ X-----X J\l^^/ i ^/S^>^.. >-A .' "7 ? A 



V -' \--*'"' : '*■ ■•■■' : ' " A" .•■[ A / // A ■ A-. \(A •' ^"s^QS ■ •*' - 

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t — . ■ • ■ 



Uj 1 1 1 1 1 1 1 1 llX 

 180 



•' ■■?•■••.. ..*.....- •••:" \ ,.-V' pj/j 



-3S 



1 111 1 111 iIii h ii m i I i m iIi u' iIiiii im ii L I 1 1 1 1 1 1 1 1 , , , , 1 , , , ,1,,,, ImnimmIhmi.h.l.u i i i i i iii — 1 ,,.,1 ,.;,i„„,.,„i,.„u 1 Ti 1 ■ hi 1 T ■ 1T1 irii 



_ LOGARITHMIC SCALE 



TIME in miriL'tes 



Given any two corresponding quantities, sohra 

 fof third by laying rule through points on prop- 

 er scales and read intersection on third scale. 



MANEUVERING BOARD I 



Price 60 cents (per pad of 50) 



r si s S § S S§8§8i!!II§ I § § §I§1§ §8§§| 8 8 188888 J 1 



'l'l'l ""l ' I ' I' H 'I' H i I i I 



'""■ = R R SSSS8 c g 

 R S S S 8 2 



i i i i' i 'i' i ' H ■ i H ' lii #w I , ! , " , i , " fg**; 



- - . ..^.. a „ g Rgs i, g j. s D5TAMCEi 



actual 

 8 DSTANCE in into 



-1 1 1 1 ' I I 1 I 1 I I t I T ill ■ ■ . ■ 1....I I ....I ■-I.-..-I 



HBhinalwi. DC. published M^. 1920. St Hy*Op»C*iC OflrfB. 



imtoo>.nith»i«,ri»»S£CRnARrOFTHEIlAW Mm (MUlcalkn 4*. Ed. &, 1933 Ml !**<*, Ami 193 



FIGURE 26. 



SPEED in knob 

 Relate, or actual 



No.26«5a 



