1. Spectrometer

Scale: 7" diameter (Brass)
Base: Cast iron with leveling screw
All moving parts made of brass for accuracy
Collimator with adjustable slit
Horizontal axis alignment for collimator: Yes
Horizontal axis alignment for telescope: Yes
Centre table: Height adjustable with provision for prism and grating holder
Telescope with user changeable cross wire and eyepiece

2. R.F Oscillator

Frequency range: 3-10 MHz
Selection: Manual using fine and coarse knobs
Amplitude: Fixed

3. Sodium vapour lamp set (Optional)

Lamp: Philips / Thorne  or equivalent
Power: 35 W
Lamp house: Single lamp type with fixed slit openings
Transformer: 35 W, Instant ON type
Rated Input: 220 V/50 Hz or 110 V/60 Hz