MAGNETO-ELECTRIC INSTRUMENTS. 



Fig. 480. 



59 



a cog-wheel on the spindle, acting in the teeth of a larger 

 wheel, which is turned by the hand, thus preventing the 

 trouble of constantly adjusting the bands, as in the usual 

 construction; the whole is enclosed in a mahogany case, 

 and may either be used in the box, or taken out. 



Price, $32.00. 



" without toothed wheel, $27.00. 



