CATHETOMETER UNIVERSAL PATTERN ( CAT NO. 459 )
THIS IS DESIGNED FOR USE IN THE VERTICAL AND HORIZONTAL PLANES. THE VERTICAL GUIDE BAR IS MADE OF BRASS. IT ROTATES ON BALLS CENTERS AND CAN BE CLAMPED IN ANY POSITION. THE TELESCOPE IS FITTED WITH ACHROMATIC OBJECTIVE AND EYEPIECE MOUNTED ON A SUB CARRIAGE WHICH SLIDES ON THE MAIN CARRIAGE.
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NODAL SLIDE ASSEMBLY CAT NO. 581
IT CONSISTS OF :
- NODAL UPRIGHT: IT IS A COMBINATION OF SINGLE AND DOUBLE LENS HOLDER ON AMOUNT ROTATING ALONG THE VERTICAL AXIS
- MIRROR: PLANE INCLINABLE MIRROR
- SLIT: FINE MACHINED CROSS SLIT WITH 1 SURFACE WHITE AND OTHER BLACK
- LAMP HOUSE: AN ELECTRIC BULB FITTED IN METAL CASE WORKABLE ON 220 V A.C.
- OPTICAL BENCH: NODAL SLIDE ASSEMBLY IS FITTED ON HEAVY OPTICAL BENCH WITH TWO FIXED AND 2 MOVABLE SLOWMOTION RIDERS.
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POLARIZER AND ANALYZER (POLAROID) ( CAT NO. 615 )
This apparatus consists of two identical units, each provided with a Polaroid disc mounted in a rotatable mount, with an aperture of 25mm. Both rotatable mounts have a pointer which traverses a 75mm diameter brass scale divided into 360°. The size is universal and can be fitted to any size of collimator and telescope.
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ABBE REFRACTOMETER ( CAT NO. 512 )
For accurate measurement of index of refraction of transparent liquids, solids, and solutions. For use in Sugar, Ghee and Oil Mills Pharmaceuticals and Chemical Laboratories, JAM Factories, and Distilleries, etc. Measuring range 1.3000 to 1.7000. Measurement of Sugar 0% to 95% CompleteDesigned for the Accurate & quick Examination of the Refractive Indices & Mean Dispersion of Liquids. Solids & Oil.
Range: N.D. 1.3000 to N.D. 1. 7000 in steps of 0.001
Accuracy : 0.0002
Sugar Percentage : 0 to 95% in steps of 1 Division
Accuracy : ± 0.5%
Temperature : 0 – 50º C -
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VERTICAL READING MICROSCOPE CAT NO. ( 630 )
The omega Vertical Reading Microscope consists of a microscope with rack focusing adjustment, mounted horizontally on an adjustable vertical column. Its height can be raised 8 cm by rack and pinion and 16 cm by means of a drawtube ( total extension 24cm ) . the column is mounted on heavy cast iron base nicely painted
The scale & vernier are machines divided to accuracy within ±0.01% or better.The horizontal microscope tube is mounted on the vertical column ( fitted with spirit level )and is adjustable by smooth rack & pinion, through twin-knobs on both sides. The microscope moves on the machined inter ground guides.
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READING TELESCOPE COLLEGE PATTERN ( CAT NO. 645 )
It is mounted on a 22 mm diameter steel shaft 18 INCH long fitted on a heavy tripod base. the telescope can be accurately positioned with the help of the two-micrometer screws in the vertical and horizontal planes
The telescope is fitted with 17.5 cms focus achromatic object-glass of special quality with 25 mm clear aperture,10x Ramsden eyepiece and cross line. the telescope is focused by rack and pinion and has a range from one meter to infinity.
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NEWTON RING MICROSCOPE COMPACT TYPE ( CAT NO. 667-ii )
This Newton ring’s microscope is compact type with built in all necessary arrangement required for conducting newton’s ring experiment . The whole microscope tube unit can be raised or lowered and can be clamped in any desired position. The focusing of the microscope unit is done by rack and pinion arrangement.
The longitudinal movement of the microscope saddle for the purpose of the Rings is done by rotating the drum. The 26 mm movement can be read by scale and on the divided drum to 0.001 cm.
Newton’s Ring set consisting of the optical flat glass and one Plano-convex Lens (50mm radius) arranged inside a metal case resting over the stage of the instrument which can be adjusted for the alignment of the measuring line . An adjustable reflector plate in the required direction is fitted on to the side of the set. The condenser lens is provided in front of the reflector.
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