Purchased at a huge mansion estate sale off the Columbia River the Dr had a lot of top of the line equipment and other items I’ve listed including coffee cups and such. This is a working piece that’s in a beautiful wood case. Bradshaw out of New York in the 30’s and 40’s built this highly sought after meter the 10 was a flagship for their company . Please feel free to make offers. It is missing 2 of its hold down screws