- 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.
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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SPECTROMETER ( DELUXE QUALITY) ( CAT NO. 661)
Omega precision spectrometers are versatile and designed to achieve higher accuracy of measurement and is useful for the study of spectra produced by prisms and gratings, for the measurements of dispersive powers, wavelengths of spectral lines, the refractive indices of the material of transparent solids and liquids.
SALIENT FEATURES
- COLLIMATOR AND TELESCOPE TUBES ARE CARRIED ON STURDY MACHINES PILLARS PROVIDED WITH MICROMETER SCREWS IN TELESCOPE AND COLLIMATOR TUBES FOR FINE ALIGNMENT
- BASE IS MACHINED CASTING FITTED WITH LEVELING SCREWS AND CARRIES THE FIXED COLLIMATOR AND SWINGING TELESCOPE ARM IN PERFECT ALIGNMENT
- SLIT OF THE COLLIMATOR IS OF STAINLESS STEEL / BRASS AND JAWS ARE FINISHED AND GROUND WITH UTMOST CARE AND TESTED FOR ACCURACY OF EDGES . THE TWO JAWS ARE OPERATED BY KNURLED RING .
- PRISM TABLE WITH GRATING HOLDER IS PROVIDED WITH THREE LEVELING SCREWS AND IS ENGRAVED WITH CONCENTRIC LINES TO FACILITATE CORRECT LOCATION OF THE PRISM . IT MAY BE RAISED OR LOWERED AND ROTATED INDEPENDENTLY OF THE VERNIERS .
- SCALE IS MACHIN DIVIDED IN ½ OR 1/3 DEGREES ON A STAINLESS STEEL SCALE FROM DUST AND CARRIES TWO TRANSPARENT PLEXI PROTECTED WINDOWS FOR VERNIERS . THE SCALE CIRCLE IS PROVIDED WITH CLAMPIN AND TANGENTIAL SCREWS FOR COARSE AND FINE MOVEMENTS . TWO VERNIERS ARE PROVIDED TO READ 1 MIN OF THE ARC OR 30 SEC. AS SPECIFIED .
- OPTICS FINEST QUALITY ACHROMATIC OPTICS ARE USED THE OBJECTIVE ARE 1” CLEAR APERTURE WITH 10X EYE PIECE RAMSDEN FITED WITH CROSS LINE
- PACKING THE ISTRUMENT IS NICELY PACKED IN PLYWOOD BOX.
CAT NO. 661 – READING TO 1 MIN OR 30 SEC. OF AN ARC 6” OR 7”: CIRCLE .
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Light/Optics
VISCOSITY BY STOCKES METHOD ( CAT NO. 159 )
The apparatus is suitable for determination of viscosity of liquids like castor oil , glycerine etc. it consists of a wide bore graduated glass tube of corning glass about 100 cm long supported in a heavy stand . the lower end of the glass tube is closed and rests on a suitable support . the upper end is closed by a rubber cork through which a thistle funnel or a thermometer can pass.
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STUDENT’S POLARIMETER WITH BI-QUARTZ PRISM (CAT NO. 621)
Analyzer brass scale graduated from 0-360 deg. or 0-180 deg. with vernier reading 6″ and accommodates a 200 mm glass tube. It is packed in a cardboard box
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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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TRAVELLING MICROSCOPE ECONOMY MODEL 3 MOTION ( h & v & t ) ( CAT NO. 669 –a)
- Cast iron base, properly machined and fitted with brass leveling screws.
- Carriage sliding smoothly in dovetail grooved at the base. it can be clamped at any position. its slow motion is achieved through a slide screw attached by a brass knob. it carries a vernier and slides along a scale fixed on the iron base
- Vertical pillar of brass, fixed on the carriage. it has a scale and a slider that carries the vernier with stainless steel embedded.
- The microscope fixed on the vertical pillar. it is adjustable by rack and pinion. it can be clamped at any position. an index mark indicates the correct position in a horizontal or vertical plane.
- The stage is provided with a white plastic plate
- A special arrangement is provided for the transverse movement of the microscope
- Travel: vertically 18 cm, horizontally 22cm and transversely 6 cm
- The movement can be measured with help of scale and vernier.
- Packed in superior wooden case
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OMEGA VERNIER MICROSCOPE ( CAT NO. 667 )
The instrument is specially designed for use with Newton’s ring apparatus .suitable for use in various positions also . the base of the instrument is substantial iron casting with top machined , over which slides a travelling carriage , which can be clamped at any position . fine adjustment is provided by a fine pitch screw . the microscope is mounted in the travelling carriage . microscope is fitted with ramsden eye piece and cross line with superior achromatic objective f.l 3” .
Travel : 16.5 cm and l.c of vernier 0.01 mm
Packed in superior wooden box .
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