SPECTROMETER INTERMEDIATE

A model for student use, with an optical system equivalent to that on more advanced models, thus permitting many quantitive experiments. Graduated disc 150 mm dia fixed to table, double ended vernier, to read to 1 minute of arc, attached to telescope. Both telescope and table have fine adjustment screws and release of clamping screw enables coarse adjustments to be made by hand, telescope and collimator are fitted with 175 mm focal length, 32 mm clear aperture achromatic objectives and have rack and pinion focussing telescope fitted with x 15 Ramsden eye piece and crossline graticule, Both telescope and collimator have rack and pinion focussing and their optical axes can also be adjusted. Prism table has lines to assist prism placement and has three levelling screws. Complete in hard wood case with the following accessories: One prism clamp, one diffraction grating holder, one tommy bar for adjusting optical axis. supported by four legs having levelling screws. Size of the tank is 580 x 500 x 70 mm supplied complete with rippler assembly, two straight obstacles 130 mm long, one straight obstacle 40 mm long, curved reflector 200 mm radius, transparent refraction plate, wooden wave roller, one pack of rubber bands, water dropper, sponge, illuminator and power supply.