Nosepiece :
Triple revolving ball bearing
self centered nosepiece. Analyser & Bertrand lens provided in separate
slide. Coarse focussing adjustment
Optional Parts & Attachments:
Compensators :
Mica Quarter Wave and Gypsum Red 1st Order
Plates.
Strain free objectives 4x/5x, 100x oil immersion.
Quartz wedge Ist to IVth Order.