Trinocular head for photomicrography and CCTV attachments.

      - Zoom Ratio:1:5.
      - Extra wide field eyepieces SWF 10x Paired.
      - Magnification Range: 10x to 50x.
      - Working distance 80mm regardless of magnification.
      - Rack and pinion focussing system.
      - Image remains clear and sharp throughout the whole zoom range.
      - Interpupillary distance adjustable from 55mm to 75mm.
        Packed in plywood cabinet.