Lot Essay
This instrument was used for sighting land masses which is why shades were deemed unnecessary.
.jpg?w=1)
Details
A late 19th Century 5¼in. radius vernier sighting quintant by J. Halden
the oxidised brass frame with polished arc signed J. Halden & Co.Ltd. Manchester & London , the inset silvered scale divided 5°- 0°- 180°, vernier clamp and fine screw adjustment, swivel magnifier, pinhole sight, two mirrors and ebony handle, in fitted box with accessories and makers label, brass drop handle and securing hooks -- 8¾in. (22.2cm.) dia
See illustration
the oxidised brass frame with polished arc signed J. Halden & C
See illustration