14 across at the widest point across the curved top. There is a crack in the glass on the left side near the corner as shown in the pics. There are two flip out doors on the back for access to allow light bulbs to be screwed in.Very unusual, and very nice. It has not been hooked up or tested. We are full time antique dealers who have been at this for over 30 years. Our descriptions and our photos are never designed to misrepresent or over-embellish our merchandise. The item "Westinghouse Electric Manufacturing Co.
Alternating Current Volt Meter HUGE" is in sale since Friday, August 16, 2019. This item is in the category "Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Other Antique Science Equip".com" and is located in Gold Country.This item can be shipped worldwide.