Good for many quantitative light experiments by students at Junior level, reading
to 0.10 (6 minutes of arc) The base combined with the collimator tube support, carries arc rotating telescope arm.
The
collimator and telescope tubes are one piece casting of light alloy, focusing by friction drive rack and pinion,
170 mm dia
circular scale reading 0.10 but 0.050 can be estimated due to larger width of scale. Optics :
Telescope : With
achromatic object glass of 170 mm, focus, 21 mm clear aperture, 8 X Ramsden eye piece with hair line
graticule, helical
focusing, fine motion, tangent screw for finer adjustment. Collimator : Mounted on fixed
pillar with axial adjustment.
Objective 150mm F.L. and 21mm aperture, helical focusing, unilateral adjustable slit
6mm long. Prism Table : fitted
with three spring loaded leveling screws and marked lines. Supplied
complete with tommy bar, screw driver and grating
holder but without prism and gratings. This Spectrometer is
normally supplied in strong cardboard box but it can be
supplied in wooden box with lock & key on demand.
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