An oxidised brass artificial horizon signed on the prismatic windscreen Thomas Jones, 62 Charing Cross, London metal mercury pot, mercury trough with trade label in fitted mahogany case -- 7½in wide
An oxidised brass artificial horizon signed on the prismatic windscreen Thomas Jones, 62 Charing Cross, London metal mercury pot, mercury trough with trade label in fitted mahogany case -- 7½in wide
An oxidised brass artificial horizon signed on the prismatic windscreen Thomas Jones, 62 Charing Cross, London metal mercury pot, mercury trough with trade label in fitted mahogany case -- 7½in wide
