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GRAND VAN HEURCK MICROSCOPE (Aplanatic low Power Illuminator)

c. 1910

Maker: W. WATSON & SONS LTD.

Circuit Stage Vn Heurck Microscope 'Holos Aplantatic Condenser'

low power The 'Aplanatic Low Power Holoscopic' condenser is suitable for objectives with N.A. of 0.65 or lower. This screws into the mount which can also house the 'Holoscopic Oil Immersion Condenser,' also now with the instrument. The low power Aplanatic Holos is signed:,'Holos, 2/3 in. .50 N.A., CONDENSER' on one side, and 'W. Watson & Sons, London on the other.