No. 11692, with silvered top scale with zero pointer and adjustable arc pointer, double 700ohm coils flanking long horseshoe magnet and calibration spring, mercury scale for temperature margin, all of lacquered finish behind cylindrical glass in polished turned wood base, exposed brass terminals, on fine-adjustment tripod base, in original stained beech carriage case with handle and catch - the case 10.1/2in. (27cm) high
No. 11692, with silvered top scale with zero pointer and adjustable arc pointer, double 700ohm coils flanking long horseshoe magnet and calibration spring, mercury scale for temperature margin, all of lacquered finish behind cylindrical glass in polished turned wood base, exposed brass terminals, on fine-adjustment tripod base, in original stained beech carriage case with handle and catch - the case 10.1/2in. (27cm) high
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
.jpg "Source: Christie's")
