A star diagonal by Broadhurst Clarkson & Co. of London.
With R.A.S. standard 1 1/4 inch thread. Rear plate with 3 adjustment screws.
Marked: STAR with the Broadhurst Clarkson logo (63 Farringdon Rd E C).
Telescope accessory for observing at high altitude and near zenith.
533 KINGS ROAD, LONDON, SW10 0TZ | +44 (0) 207 351 2344 | mail@hatchwellantiques.co.uk
Copyright © 2025 Hatchwell Antiques