Today I added a Lambrecht Polymeter to the instrument collection on the website.  I believe it dates from the early 1900s but I could be wrong.  Lambrecht made polymeters from around 1893 until at least the 1980s.  However this polymeter has a dial face almost the same as one shown in the 1913 Eimer & Amend catalog available on this website.  It has a mercury thermometer, beveled glass, and an old-looking dial face.  Newer Lambrecht polymeters had silvered faces.

​See Lambrecht Polymeter.