Telescope at Gresham College

Illustration from Paper entitled "Of a Telescope stand set up in the yard of Gresham College" Cl.P/20/61

The sketch depicts a 36 foot refractor telescope by Richard Reeve of Long Acre in a tube of 40 feet mounted in the courtyard of Gresham College, the tube being braced to prevent it bending under its own weight, and suspended from a mast by a system of pulleys and raised or lowered by a winch at the base. The suspension of the pulley could move around the mast, according to the direction required of the telescope. A rest for the eye end resembles an artist's easel, while at the foot of the page is a series of micrometers designed by Wren.