A brass library telescope by James Pettit F.R.A.S. (Fellow of the Royal Astronomical Society), the main tube is inscribed "Made by James Pettit F.R.A.S." and the tripod has the retailers mark of Westmoreland Opticians of Derby, it is dated 1844.
3 1/4" objective lens.
James Pettit (d. 1850.11.25, FRAS 1825.04.08, obituary MN v11, p.90)