This is a robust instrument designed specifically for student use, which nevertheless is capable
of very high performance.
The main structure is of heavy cast metal, with bright plated fittings.
The complete instrument is supplied with wooden case.
Scale: The 150mm diameter circle with protective plastic shield is fixed to the telescope
movement and the table is attached to the double ended vernier, which reads to 1 minute
of arc.
Both telescope and table rotation fine adjustment screws, and release of a clamping screw
enables adjustment of both movements to be made by hand.
Collimator: Mounted on fixed and fitted with 178mm focus achromatic objectives, 25mm clear
aperture. Also fitted is a unilaterally adjustable slit7mmlong.
Telescope: Mounted on moveable pillar and fitted with 178mm Focus achromatic objective, 25
mm clear aperture.
Also fitted is a 8× Ramsden eyepiece and a glass cross line graticule. Both the telescope and
collimator have rack and pinion focusing.
Means are provided for leveling the axis of both optical units and for squaring them to axis of
rotation.
Prism Table: The table is marked with lines to assist placing the prism with respect to the table
leveling screws.
*Note: image shown above is for illustration purpose only; Actual image may vary due to specification, Design, Technology and R&D.*
