Description

Comprises a collimator tube with adjustable slit and a rotatable telescopic tube. Graduated circular scale 127mm dia fixed to the table double enabled vernier to read 1mm. of arc. Is attached to telescopic tube. Both the tube has fine adjustments screws and release of clamping screws enables coarse adjustment by hand. Telescope and collimator are fitted with 32mm clear aperture chromatic glass and have rack and pinion focusing. Telescope is fitted with 10 x ramsden eyepieces and cross line gratitude. The prism table marked with lines to assist positioning of prism has interchangeable clamping unit for prism and diffraction grating. Complete in polished wooden case.