Barometer glass in brass ring with pointer, the glass is flat with a bevelled edge. In good but used condition. Glass is lose in the ring. Pointer is from center 1 3/16″ or 2,9 cm long. Glass is Ø 3 1/8″ or 8 cm and glass with the ring is Ø 3 1/16″ or 9,3 cm. Used item signs of use.