Optical Bench, Junior

On wooden base, with 1.5 meter scale, with six sliding bases. Each siding base is with an index mark, a brass pillar and locking screw, with following accessories: 1. One lamp house with 230 V lamp. 2. One object screen, metal, white. 3. One lens holder for 38 mm diameter Lenses. 4. One receiving screen, metal, white, with slot for squared paper on reverse. 5. One object needle, mounted in brass rod. 6. One plane mirror in metal frame. Each of these accessories is mounted on a 6 mm brass rod which fits into the pillars and is adjustable for height.