artificial horizon

Made by Dolland, London (embossed on underneath of glass hood), complete with mercury jar, label dated 2 Feb 1911, marked N.S. Sta 1537/02 G&S (5488) 250 12/04d.  In original wooden box with brass fittings.  Box size 19 x 15 x 13cms, instrument 15 x 12 x 9cms Item: TH41 SOLD