$150.00, located in Harvest, Alabama, USA (357**), item #225760624581
Circa 1800’s. This was state of the art in the 1800’s and used as late as 1960’s woolen mill labs. We had it on display. We have had this in our Mill since ~ 1991. I have included a new close up photo of the arm that shows a possible anomaly at the lower end of the pointer.