LIST OF ILLUSTRATIONS^/. 



FIG. 



79 Compass, Transparent ... 



80 Compass, Prismatic 



8 1 Compass, Prismatic 



82 Compass, Prismatic 



83 Compass, Surveying 



84 Compass, Needle ... 



85 Compass, Standard 



86 Compass, Overhead 



87 Compass, Standard, Light 



Card 



88 Compass, Liquid Form ... 



89 Compasses, Drawing 



90 Compass, Beam ... 



91 Compressor 



92 Condenser, Achromatic ... 



93 Cross Staff 



94 Cross Staff 



95 Currentmeters 



1427. Currentmeter, Tidal 

 Log. 



1494. Currentmeter. 



1495. Amsler Currentmeter, 

 Pattern III. 



1496. Ditto, Pattern I. 



1498. Ditto, Pattern IV. 



1499. Ditto, Pattern VI. 



96 Dichroiscope 



97 Dip Needle 



98 Deflector ... , 



99 Deflector, Kelvin Pattern 230 



100 Dip Needle, Kelvin Pattern 



(Vertical Force Instru- 

 ment) 



101 Dial Sight 



102 Director 



103 Divider, Hair 



104 Eectrometer, Dolezalek ... 



105 Dotting Pen 



1 06 Electrometer, Laby String 



107 Electrometer (Wilson 



Kaye's Tilted Gold Leaf) 



1 08 Endless Tangent Screw on 



Sextant 



109 Extensometer 

 no Episcope ... 



in Eyeglasses, Folding Pattern 



112 Forceps for Microscope ... 



113 Forceps, 3-prong ... 



114 Finder, Maltwood's 



115 Finder, Telescope ... 



116 Field Glass, Prism 



117 Field Glass, Galilean 



118 Fuller Calculating Slide- 



Rule 



