1680. Senior Optical Bench
One rod of stainless steel and the other brass pipe or both brass pipes (please specify)
a) 1 meter long.
b) 1½ meter long.
c) 2 meter long.

1681. Optical Bench Special Type
Twin Bar 1½ meter long for Degree classes Specification as above but both the bars are made of Brass chrome plated pipes 7/8" dia with the following special accessories:
1 Lens holder Universal type
2 Centring Pins
1 Prism table
1 Lamp house with bulb workable on 220 Volts and having arrangement fat fitting cross wire or wire gauge
1 Cross slit to be fitted in Lamp house
1 Wire Gauze to be fitted in Lamp house
Accessories

1682. Lens holder wooden.
Mounted on a base with slot to accommodate lenses.

1683. Universal lens hoIder metallic.
Mounted on metal stem 6 mm. diameter to accommodate lenses and mirrors to 62 mm. diameter.

1687. Centering or parallax pin or optical pin. brass N. P., Length 125 mm, diameter 9 mm.

1688. Object screen,
Comprising of a circular metal screen 75 mm diameter painted white with a 10 mm central aperture covered with wire gauge, mounted on a 6 mm or 9 mm rod N. p.

1689. Cross Slit screen,
Comprising of a circular black metal screen 75 mm diameter with a10 mm diameter aperture and cross. mounted on 6 mm or 9 mm brass rod N. P.

1692. Prism Table.
For supporting prism. glass block etc. A metallic disc 80 mm diameter mounted on 6 mm or 9 mm rod.
 

1695. Adjustable stand,
tripod metal base stoving hammer finish, having brass N. P pipe with thumb screw to accommodate 6 mm diameter stem or rod.

1696. Adjustable Stand
metal base nicely painted having Chrome plated pipe to accomodate 9 mm dia stem or rod.

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