Simple form for school and junior colleges, focussing from one meter to infinity, provided with 10x Ramsden eye piece with cross wire, achromatic objective. Focussing with rack & pinion, height of telescopes is adjustable, fitted on cast iron base
Amounted on nice duco painted round cost iron heavy base with three levelling screws and 25mm dia and 450mm long steel pillar. The telescope is provided with high class optical combination and brass. C.P. fittings, provision for up and down, to and from moting is incorporated, complete with perspex scale and scale and scale holder.
Superior quality, all parts are made from brass, achromatic objective, provided with wooden folding stand.
Designed to give maximum accuracy with 160mm stainless steel scale divided to 1300, vernier reading 12 seconds, telescope holder is adjustable to the required height, complete with sight tube, one inverting, one erecting telescope and one sun glass.
A basic instrument for performing spectroscopy experiments, designed to give best possible results, mounted on stable cast iron base, protracted scale 150mm is divided on precision machine, vernier reading 1 min., telescope is fitted with 25mm dia. and 178mm focal length achromatic objective, 10x Ramsden eye piece and cross line graticule, collimeter has an adjustable precision slit of 6mm long jaws of non rusting metal, 8cm dia. prism/grating table is adjustable and has engraved ring pattern. Supplied in a beautiful plywood box with prism holder and grating holder
Read by two opposite verniers reading to one minute of the arc. The objectives used in telescope and collimators are achromatic and provided with rack and pinion focusing arrangement. Telescope arm and prism table are provided with fine and coarse adjustment. The prism table is provided with three leveling screws and is engraved with concentric ring and lines. The scale and verniers are of stainless steel and are machine divided. Cover plate protects the scale from dust and carries two transparent windows for verniers. The instrument is finished in pleasing and smooth duco colour and other necessary parts are chromium plated. With prism clamping device and diffraction grating stand in polished wooden case: a) 5 dia circle reading one minute , b) 6 dia circle reading one minute, c) 6 dia circle reading 30 seconds, d) 7 dia circle reading 30 seconds, e) 9 die circle reading 30 seconds, f) 10 dia circle reading 30 seconds
For Accurate measurement of refractive index of transparent liquids, solids and solutions, used in sugar, ghee and oil mills, pharmaceuticals and chemicals chemical laboratories, jam factories and distilleries etc. Measuring range 1.3000 to 1.7000, measurement of sugar )% to 95%. The body of instrument is fixed with a leaning of 600, correct reading can be taken in the fields. It includes Abbe’s double prism with thermostat, compensator, telescope mirror, graduated scale, reading magnifier and radial arm which carries vernier. Complete in polished wooden box
