18131 Lens Holder Grooved to hold the lens edges, with horizontal locking bracket. No. 18130 for lenses up to 60 mm dia No. 18131 for lenses up to 100 mm dia.	18132 Triple Lens Holder Can be used with up to three lens elements. The outer holders are equipped with rack and pinion mechanisms for 40 mm focus movement ea. For lenses up to 80mm dia.	18133 Centering Lens Holder Equipped with three individually adjustable holding brackets for lenses up to 80mm dia.	18136 Self Centering Lens Holder Lever activated auto centering for lenses up to 80 mm dia.
18151 Universal Filter Holder Available in 3 aperture sizes. Two stage clips hold the filter firmly in place No. 18150 ... 38x38mm No. 18152 ... 89x89mm	18154 2x2" Filter Holder Accepts standard 2x2 inch / 50x50mm filters or slides of up to 4 mm thickness	18155 Multiple Filter Holder Can hold six 2x2" / 50x50mm filters with up to 4 mm thickness. Filters can be moved in or out of optical path independently.	18246 Threaded Holder for Polarizers/Analyzers For commercially available 50mm polarizing filters
	18089a / 18089b Focusing Lens Holder with scale 18089a for lenses up to 60 mm dia 18089b for lenses up to 100 mm dia. 18090a / 18090b same as above but carriage is without scale	18244 Screen Holder Designed for large targets, screens, filters, etc. of 12x12" / 30x30 cm size

Home