Junior Spectrometer Model Smp-2

Salient Features of Junior Spectrometer Model SMP-2 :-
* 175mm dia scale graduated in 0-360A and telescope attached vernier has least count 0.1A . The scale is independently rotatable through 180A and can be locked in any desired position.
* Telescope is mounted on movable pillar has coarse and fine adjustment, locking screw and axis adjustment. Achromatic objective has 175mm focal length and 25mm dia is focusable by helical motion. Vernier reading to 0.1A is fixed on the telescope arm.
* The telescope is provided with 8x ramsden eye-piece with cross line graticule. Collimator mounted on fixed pillar of the base with axis adjustment. Achromatic objective dia 25mm and focal length 175mm is fitted in the collimator.
* Collimator has helical focusing and slit at the one end.
* 75mm dia prism table with lines marked to assist placement of prism. The prism holder can accommodate prism upto 38mm high. It has screwed holes to accommodate prism or grating holder.