The University of Arizona
College of Optical Sciences

Collection Home > Telescopes > Multiple Draw > Three-Draw Telescope

Other Instruments by Ramsden

 

Three-Draw Telescope

Signature Ramsden, London

Date Late 1700s
Dimensions English Metric
Main Tube Length 4.9in 124mm
Main Tube Diameter 1.5in 37mm
Total Length 13.1in 333mm
Closed Length 5.2in 132mm
Objective Clear Aperture Diameter 1.3in 33mm

Description

This telescope has a parallel mahogany barrel.  The objective lens appears to be a replacement. It has three brass draws, each of which has had repairs.  The segmented eye tube is missing one lens and may be missing a brass segment. The flared eyecup has a seized swivel cover.  The largest draw is signed "Ramsden, London" with the eye tube to the left.

 


College of Optical Sciences
The University of Arizona, 1630 East University Boulevard, Tucson, Arizona U.S.A. 85721-0094

All contents copyright 2008  Arizona Board of Regents.