Intermediate Spectrometer

More Robust And Provides Better Performance. The Main Structure Is Of Heavy Cast Metal, With Bright Plated Fittings. The Complete Instrument Is Supplied In Wooden Case. Scale:150Mm Diameter Circle With Protective Plastic Shield Is Fixed To The Telescope Movement And The Table Is Attached To A Double Ended Vernier, Which Reads To 1 Minute Of Arc. Both Telescope And Table Rotation Has Fine Adjustment Screws And Release Of A Clamping Screw Ebles Adjustment Of Both Movements To Be Made By Hand. Collimator: Mounted On Fixed Pillar And Fitted With Achromatic Objectives With Fl 178Mm, 25Mm Clear Aperture. Also Fitted Is A Unilaterally Adjustable Slit 7Mm Long. Telescope: Mounted On Moveable Pillar And Fitted With Achromatic Objective With Fl 178Mm, 25Mm Clear Aperture. Also Fitted Is A 8x Ramsden Eyepiece And A Glass Cross Line Graticule. Prism Table: The Table Is Marked With Lines To Assist Placing The Prism With Respect To The Table Leveling Screws. Both The Telescope And Collimator Have Rack And Pinion Focusing Incorporates Provision For Leveling The Axis Of Collimator And Telescope Along The Axis Of Rotation. Standard Accessories Supplied: 1 Prism Clamp, 1 Diffraction Grating Holder, 1 Magnifier, 1 Wooden Case. (Intermediated Spectrometer)