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Optical Instruments
OPTICAL BENCH 1.5 METERS
Same as per Cat. No. 10738 but 1.5 meters long.
OPTICAL DISC MAGNETIC
| 500mm diameter, steel disc is faced with matt white, marked every 5º, with extended lines every 10º & 30º; cross lines mark the centre. The disc is mounted on a 25mm diameter steel tube 390mm long, which fits into a stable base with leveling feet. The disc rotates about its centre & can be locked in any desired position. The lamp house holds a 12V, 24W axial filament lamp. This lamp house is covered by a rotatable outer shield that has various slots. By rotating the shield, light beams of varying width as well as narrow single, double & triple beams can be provided. Attached to the lamp house is an adjustable lens carrier with lens to provide spanerging, parallel or converging light beams. The lamp house is mounted on a rotatable arm that can be locked in any position. A sliding weight on the arm acts as a counterpoise. All optical elements are supplied with magnets attached so that they can be attached at any place on the disc. The disc is supplied complete with accessories. |
OPTO MAG 6 ( Table Top)
| Lens : | 130mm Precision Lens |
| Magnification : | 4 x area magnification and 2 x liner magnification. |
| Lighting : | 32 Watts (230V) Circular fluorescent tube avoids shadows |
| Stand : | Rigid Stand of S.S Pillar with angle and height adjustment |
| Focusing : | By bush & pillar systems. |
| Lumens : | 500 lumens (5,400 lux) of day light/sq.ft. |
| Dimension : | Length X Width X Height (mm)425 400 390 |
| Weight : | 11 Kg after packing (approx) |
OPTO MAG 7 ( With Light Table )
| Lens : | 130mm Precision Lens |
| Magnification : | 4 x area magnification and 2 x liner magnification. |
| Lighting : | Top 22 Watts (230V) Circular fluorescent tube avoids shadows, bottom 22 Watts (230V) Circular fluorescent Tube for uniform, lighting on light table, separate switch provided for inspanidual, lighting. |
| Stand : | The universally adjustable stand can be Positioned at any XYZ angle A counter balancing spring keep equipment in In any changes position |
| Focusing : | By bush & pillar systems. |
| Lumens : | 500 lumens (5,400 lux) of day light/sq.ft. |
| Dimension : | Length X Width X Height (mm) 420 235 900 |
| Weight : | 20 Kg after packing ( approx) |
| Option : | Stand ( as in OPTOMAG 6) can be supplied at no extra cost instead of universally adjustable stand |
OPTO MAG 8 (Vice Base)
| Lens : | 130mm Precision Lens |
| Magnification : | 4 x area magnification and 2 x liner magnification. |
| Lighting : | 22 Watts (230V) Circular fluorescent tube avoids shadows |
| Stand : | The universally adjustable stand with vice base for clamping to the edge of table length can be Positioned at any XYZ angle A counter balancing spring keep equipment in any changes position |
| Focusing : | By bush & pillar systems. |
| Lumens : | 500 lumens (5,400 lux) of day light/sq.ft. |
| Dimension : | Length X Width X Height (mm) 430 235 900 |
| Weight : | 11 Kg after packing (approx) |
OPTO MAG 9 (Economy)
| Lens : | 130mm Precision Lens |
| Magnification : | 4 x area magnification and 2 x liner magnification. |
| Lighting : | 22 Watts (230V) Circular fluorescent tube avoids shadows |
| Stand : | 360 rotable head with height adjustment . |
| Focusing : | By bush & pillar systems. |
| Lumens : | 500 lumens (5,400 lux) of day light/sq.ft. |
| Dimension : | Length X Width X Height (mm) 425 400 390 |
| Weight : | 9 Kg after packing ( approx) |
PERSPEX BLOCK SEMICIRCULAR
Of clear Perspex, all faces nicely polished.
PIN HOLE CAMERA
| To illustrate images produced by small apertures. Comprising a polished wooden box with a ground glass screen at one end and a hole at the other. |
PINHOLE CAMERA KIT
The kit consists of the following items. 8 cardboard boxes 150x100x100mm with hole, screen and lid, 50 sheets of black paper 200x250mm, 1 x 200 W lamp, 1 mounted lamp holder with flex, 1 packet of pins.
PLAIN MIRROR GLASS
Silvered Back, with protective coatings & ground edges.
PRISM GLASS EQUILATERAL
60?x60?x60?, made from moulded glass.
PRISM GLASS RIGHT ANGLE
90?x45?x45?, made from moulded glass.
PRISM PERSPEX EQUILATERAL
60?x60?x60?, clear Perspex polished surfaces.
PRISM TABLE
A brass disc 75mm diameter mounted on a 62mm rod giving an overall height of 62mm.
Racket Magnifiers
RACKET MAGNIFIERS
Dia : 90 mm
Manification : 4x
Racket shaped, sturdy,ideal for Map reading & Inspection of Electronic Components.
Dia : 90 mm
Manification : 4x
Racket shaped, sturdy,ideal for Map reading & Inspection of Electronic Components.
RAY OPTICS BOX
| Black finish metal box, with 12V 24W straight filament lamp. The lamp holder, with 1m of twin flex, is mounted in sliding metal bridge piece which provides sufficient adjustment to covering, parallel or spanerging rays. The enamelled steel body has slots to support a cylindrical lens & a triple slit screen. Extra slots are provided for filters. Dimensions 182x61x115mm approx. The box is supplied complete with lamp & triple slit but without lenses or filters. |
RAY OPTICS KIT
| Kit consists of two lamp holders, each in metal shade with two axial slots & mounted on metal support rod. Holder complete with approx. 1.2 meter wire P.V.C. covered cable & 12V 24W axial filament lamp. One each right & left hand cylindrical lamp shields, in matt black ‘combs’; with 17 equal spaced parallel slots, Two black plastic plates, each with single & triple slits, two comb & plate holders, a spring loaded clip mounted on metal support bracket, 4 metal light barriers, 4 each plano-convex cylindrical lenses, 50x50mm, +7D, two each cylindrical lenses 50x50mm respectively, plano convex +10D, +17D, plano concave -17D. |
RAY TRACK APPARATUS
| A compact visual teaching aid which is robust in construction wood board 400x280x13mm with matt white surface, mounted on rubber feet carries a circular scale with four quadrants 0 - 90? graduated every 2?, with two lines at right angles. The ray box is provided with slots to accommodate metal slits, colour filters, lenses etc., & is fitted with a 12V 24W line filament. |
READING TELESCOPE
Designed for general laboratory work. The telescope is mounted on rod 18mm diameter and 450mm long fitted on a heavy tripod base. The telescope can be rotated both in vertical as well as horizontal plane. It is fitted with 180mm focus achromatic object with 25mm clear aperture, 10x Ramsden eye piece with cross wire. The telescope is focused by rack & pinion & has a range from one meter to infinity; with Perspex scale & its attachment.
REFLECTING TELESCOPE
A high quality instrument with a resolving power of 1.5 seconds. The 100mm diameter, 100cm focal length mirror gives relatively more light & less chromatic aberration than an equivalent refractor. Magnifications of upto 250x are obtainable. The telescope has an equatorial mount with hour and declination circle & micro adjustments with flexible connections to avoid vibrations. The whole is mounted on a heavy 1.52 m tripod with an accessory tray. Supplied complete with two interchangeable eye lenses 6mm & 20mm, a 2x Barlow lens, sun filter, moon filter, a 5x24 star finder telescope (with mount on main telescope body), a solar aperture cap & an instruction booklet with space & moon maps.
REFRACTIVE INDEX OF A LIQUID BY CRITICAL ANGLE METHOD
| The apparatus consists of a metal bridge 130x90x80mm, fitted with anti-slip rubber edging strips. The air cell holder is attached to a large knob & scale. Graduated from 0? to 360?. The air cell takes the form of two flat glass plates, 50x50mm; arranged parallel & at a small distance apart in a sealed masking frame. Liquid under investigation is contained in a transparent -Perspex tank. Supplied with tank. |
SET OF ACRYLIC PLASTIC BLOCKS
SET OF ACRYLIC PLASTIC BLOCKS Clear acrylic plastic blocks 20mm thick; all sides & surfaces fully polished. The set comprises 7 blocks as follows: Rectangle 75x50mm, Triangle 90?x45?x45?; 75mm hypotenuse, Triangle 60?x60?x60?; 57mm side, Semicircle 75mm diameter, Bi-Convex 75mm long (curved faces radius 115mm), Bi-Convex 75mm long (curved faces radius 145mm), Bi-Concave 75mm long (curved faces radius 115mm)
SODIUM VAPOUR LAMP
Complete with vacuum jacket 35 watts. For producing monochromatic light at a high intensity. Each lamp has a glass envelope with an inner discharge tube containing the gas or vapour and two electrodes. The envelope is mounted on an E.S. cap, providing an arc centre height of 110mm, approx.. Each lamp is fully interchangeable, no adjustment being required.
SPECTROMETER PRISMS
Prisms optically worked for Spectrometer work equilateral two faces polished, size 25x25mm.
STUDENT SPECTROMETER
| The base, integral with the collimator tube support, carries the swinging telescope arm pivoted on a bearing with spring loaded end thrust plates. This type of bearing eliminates any slack which would otherwise develop with wear. The collimator & telescope tubes are one piece precision casting in light alloy, concealed helical action focusing devices are provided. The collimator slit with spring loaded jaws is of a new & robust design which ensures retention of the initial accuracy. The graduated prism table support, 180mm diameter, is spanided in degrees; the vernier, reading to 0.1 is fixed to the telescope arm. This arrangement permits easy estimation to 0.05 from the conveniently positioned vernier scale. . The fully adjustable prism table 75mm dia. is engraved with concentric rings, which facilitates correct location of a prism & has two screwed holes for the attachment of the prism & grating holder, to accommodate a prism upto 25mm high. Large diameter clamping knobs are fitted for movement control & fine adjustment is provided for the telescope. All bright parts are chromium plated with the base & tube in synthetic hammer finish. |
TERRESTRIAL TELESCOPE
Complete model with lenses, mounted on metal foot with diagram of rays shown for demonstration.
