High Grade Advance Spectrometer,

High-Grade Advance Spectrometer, 5”

High-Performance Instrument

Scale: 125 mm dia. divided 0 to 3600 x 0.5 degree readable with vernier to1minute of arc

Collimator: Achromatic objective lens 175mm FL, the clear aperture of 32mm. Rack and pinion focusing mechanism. Adjustable slit 6mm long. Mounted on a fixed pillar.

Telescope : Achromac: Objective lens 175mm FL, the clear aperture of 32mm. Rack and pinion focusing mechanism. Mounted on a movable arm with a slow and fine moon.

Ramsden Eyepiece: 15 X magnification with cross line glass graticule and in and out focus adjustment.

Prism Table: 85mm diameter table is provided with three leveling screws and is marked with lines to assist placement of prism