DESCRIPTION :
Achromatic object glass focal length of 17.5cm and 25mm clear aperture. 10 x Ramsden eyepiece & focussing by rack and pinion (with up and down, to and fro motion) Range from 1000mm to infinity. Carriage for telescope with adjustable ring to stop adrupt falling, fitted with adjustable screws for precise vertical and horizontal positioning. Scale and scale holder are provided with the stand. 25mm dia steel pillar, 450 mm long fitted on a heavy cast iron base with three levelling screws.
Both tubes of the telescopes are of brass. Supplied with scale and scale holder and fitted with cross line graticule.
|
