GRIMSDELL DIX GALVANOMETER, 1900's

Astatic galvanometer made by Grimsdell Dix Acton London. An Astatic type has two needles in parallel mounted in opposite direction, to defeat the effect of the earth's field.

Your comments:

• To me this one looks like an Astatic Galvanometer; not a tangent one.
  
  Editor
  There is a second needle on this instrument, but it is has no compass point, it also points to the north.
  .......... Nick, Niagara Falls, NY, 8th of December 2010
  
  

A0192