Cockrill, H.G., Co.    Holliston, MA 01746 2048
Jan 08, 2002 Optics Mounting Rings protect edges of lenses, filters, gratings, pellicles and mirrors. Machined from aluminum to ±0.05 mm and then black anodized to provide non-reflective surface, rings are available in sizes from 9 mm to 50 mm OD in 3 mm increments that range from 0.75 mm to 7 mm deep. Rings are available in single-, double-sided, and two-piece configurations that nest within each other. Internal recess holds optics.