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Grubb spectroscope, 1871.

Grubb spectroscope, 1871.
3 2 c m
actual image size: 32cm x 24cm


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.

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