Standard Spectrometer

The main structural parts, including the collimator and telescope bodies are of heavy castings, other metal parts being bright plated.

Scale: 170mm diameter, divided 0 to 360° × 1°, independently rotatable with locking screw. A spring-loaded vernier scale attached to the telescope mount provides readings to 0.1° (6 minutes of arc).

Collimator: Mounted on fixed pillar with axis adjustment. Objective lens has 150mm FL, an aperture of 21mm and is carried in spiral focusing system. Unilaterally adjustable slit6mmlong.

Telescope: Mounted on moveable pillar with adjustment, locking screw and axis adjustment. Objective lens has 170mm FL, 21mm aperture and is carried in a spiral focusing system. Ramsden eyepiece with crosswires and locking ring focus adjustment.

Prism Table: The table is provided with three leveling screws and has lined marked to assist placement of prism.

Standard Accessories Supplied: 1 prism clamp for prisms up to 40mm high, 1 diffraction grating holder, aperture 25 × 25mm, 1 small screwdriver, 1 tommy bar for axis adjustment.