A four draw wooden barrelled telescope signed, 'Chadburn Bros, Sheffield'. They worked from Sheffield from 1837 - 1884 and had a Royal Appointment to Prince Albert. 

The main lens is 2" (50 mm) diameter and gives a fine sharp image when viewing through with a magnification of 25 x.

The telescope measures 36" (91 cm) when fully extended and 10.5" (27 cm) when closed. It is in very good condition and comes with a later wooden display stand.

Circa 1850.