mid century vintage Frisy W Germany desk thermometer, dial gauge brass instrument

Mid 20th century vintage industrial style brass thermometer, working well. I watched this for days, and the temperature is accurate. The face is marked W Germany, it's probably Frisy I think.

This is about 2" across the glass front of the dial, and stands about 4 1/4" tall overall. Brass is spotted and tarnished, but solid (no stress cracks).