
3 2 c m
40cm
actual image size: 32cm x 24cm
Description
Grubb spectroscope with 3 compound prisms and automatic adjustment to minimum deviation engraved 'Grubb Dublin 1871' in two boxes - no 2, 19 1/2' x 8' x 11' for equatorial mount, no 1 23' x 17' x 8' - damaged key but lock mising. Made in Dublin.
Image Details
Image Ref.
10197243
© Science Museum / Science & Society Picture Library