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Physics Equipment
RESISTANCE BOX, PLUG TYPE
Same specifications as per RESISTANCE BOX, PLUG TYPE but with non-inductively wound coils of manganin wire, double silk covered with resistances adjusted to high precision. Accuracy ? 0.05%.
RESISTANCE BOX, PLUG TYPE Range 1-100, Total 210, No. of Coils 9
For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%.
RESISTANCE BOX, PLUG TYPE Range 1-100, Total 210, No. of Coils 9
Same specifications as per RESISTANCE BOX, PLUG TYPE but with non-inductively wound coils of manganin wire, double silk covered with resistances adjusted to high precision. Accuracy ? 0.05%.
RESISTANCE BOX, PLUG TYPE Range 1-1000, Total 1110, No. of Coils 13
For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%.
RESISTANCE BOX, PLUG TYPE Range 1-1000, Total 1110, No. of Coils 13
Same specifications as per RESISTANCE BOX, PLUG TYPE but with non-inductively wound coils of manganin wire, double silk covered with resistances adjusted to high precision. Accuracy ? 0.05%.
RESISTANCE BOX, PLUG TYPE Range 1-10000, Total 21110, No. of Coils 17
For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%.
RESISTANCE BOX, PLUG TYPE Range 1-10000, Total 21110, No. of Coils 17
Same specifications as per RESISTANCE BOX, PLUG TYPE but with non-inductively wound coils of manganin wire, double silk covered with resistances adjusted to high precision. Accuracy ? 0.05%.
RESISTANCE BOX, PLUG TYPE Range 1-50, Total 110, No. of Coils 8
For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%.
RESISTANCE BOX, PLUG TYPE Range 1-50, Total 110, No. of Coils 8
Same specifications as per RESISTANCE BOX, PLUG TYPE but with non-inductively wound coils of manganin wire, double silk covered with resistances adjusted to high precision. Accuracy ? 0.05%.
RESISTANCE BOX, PLUG TYPE Range 1-500, Total 1110, No. of Coils 12
For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%.
RESISTANCE BOX, PLUG TYPE Range 1-500, Total 1110, No. of Coils 12
Same specifications as per RESISTANCE BOX, PLUG TYPE but with non-inductively wound coils of manganin wire, double silk covered with resistances adjusted to high precision. Accuracy ? 0.05%.
RESISTANCE BOX, PLUG TYPE Range 1-5000, Total 11110, No. of Coils 16
For accurate work. In well polished wooden box with bakelite panel figured in white. Split brass contact blocks hold precision cut, interchangeable brass plugs having moulded black bakelite fluted tops. Coils of constantan wire, non-inductively wound, double silk covered; with resistances precisely adjusted and are mounted underneath the panel with double nut arrangement. Accuracy ?O.1%.
RESISTANCE BOX, PLUG TYPE Range 1-5000, Total 11110, No. of Coils 16
Same specifications as per RESISTANCE BOX, PLUG TYPE but with non-inductively wound coils of manganin wire, double silk covered with resistances adjusted to high precision. Accuracy ? 0.05%.
RESISTANCE COILS
A range of resistance units based on a high stability metal film element (PCB). They offer improved accuracy and robustness, and are economical than traditional resistance coils. Accuracy ?1%
RESISTANCE COILS, IN CYLINDRICAL TRANSPARENT CASE
Non-inductively wound with double silk covered constantan coils on insulated plastic bobbins positioned in a transparent cylindrical plastic container by means of a plastic lid having 4mm socket terminal at its top. Values clearly marked on each coil. Available in Eureka / Constantan Wire or Magnin Wire.
RESISTANCE COILS, PLASTIC CASE, ACCURATE
Non-inductively wound resistance coils of double silk covered constantan wire, mounted in moulded plastic round case. A pair of 4mm socket terminals at the top provide its connection in the circuit. Value clearly marked on each coil. Accuracy ?O.2% rated 1 W.
RESISTANCE COILS, PLASTIC CASE, ACCURATE 0.1 to 0.9Ω
Non-inductively wound resistance coils of double silk covered constantan wire, mounted in moulded plastic round case. A pair of 4mm socket terminals at the top provide its connection in the circuit. Value clearly marked on each coil. Accuracy ?O.2% rated 1 W.
RESISTANCE COILS, PLASTIC CASE, ACCURATE 11 to 500Ω
Non-inductively wound resistance coils of double silk covered constantan wire, mounted in moulded plastic round case. A pair of 4mm socket terminals at the top provide its connection in the circuit. Value clearly marked on each coil. Accuracy ?O.2% rated 1 W.
RESISTANCE COILS, PLASTIC CASE, ACCURATE 500 to 10000Ω
Non-inductively wound resistance coils of double silk covered constantan wire, mounted in moulded plastic round case. A pair of 4mm socket terminals at the top provide its connection in the circuit. Value clearly marked on each coil. Accuracy ?O.2% rated 1 W.
RESISTANCE COILS, TRANSPARENT PLASTIC CASE
Non-inductively wound with double silk covered constantan coils on plastic shaft enclosed in a transparent plastic tube with a connection terminal at each end. values clearly marked on each coil. Accuracy ?0.2%. Rated 1W.
RESISTORS, SLIDING CONTACT (RHEOSTAT), OPEN TYPE, DOUBLE TUBE
With slider arrangement sliding between two tubes parallel to each other, diameter of each tube about 43mm. Supported at both ends on legs
RESISTORS, SLIDING CONTACT (RHEOSTAT), OPEN TYPE, DOUBLE TUBE
With slider arrangement sliding between two tubes parallel to each other, diameter of each tube about 56mm. Supported at both ends on legs
RESISTORS, SLIDING CONTACT (RHEOSTAT), OPEN TYPE, SINGLE TUBE
For use as series resistors or potentiometers. Comprises of eureka wire wound on a porcelain tube, supported at both ends on moulded plastic legs. Open type slide wire type with a variety of resistance and current carrying capacity. Copper-nickel alloy wire is oxidized to provide the desired insulation. Phosphorus bronze contact provided on metal chrome plated slider-rod to give rapid and smooth adjustment. Three 4mm socket terminals are provided - one at each end of the wound resistance wire and third one on one of the supporting legs and connected to the slider arrangement, enabling the use of rheostat as variable resistor or potential spanider. Designed for continuous use without overheating. Total resistance in 0 and current carrying capacities are marked on each rheostat. Pipe Diameter 43mm.
RESISTORS, SLIDING CONTACT (RHEOSTAT), WITH PERFORATED COVER
Heavy pattern. sturdy design. protected by perforated cover and designed to provide extra safety to the user. Other important design changes include spring loaded sliding contacts of solid brass in place of phosphor bronze strip contacts. Wound with heavily oxidized resistance wire on an insulated tube. Fitted with three 4mm socket terminals allowing for use as a variable resistor or potentiometer with a single slide operation. Resistance and current rating clearly marked on the slider. Resistance ? 1.0% of the nominal value. Permits continuous use for longer periods without overheating. Pipe diameter available is about 56mm
RESISTORS, SLIDING CONTACT (RHEOSTATI, OPEN TYPE, SINGLE TUBE
With bigger tube diameter. On grooved asbestos pipe with cast metal legs. All ranges available as in Physics 0411
RESISTORS, SLIDING CONTACT (RHEOSTATI, OPEN TYPE, VITREOUS ENAMELED TUBE
Rheostats of excellent quality. Wound with heavily oxidized resistance wire on vitreous enameled steel tube. The winding is locked into place with ceramic cement. The tube is carried upon robust enameled die-cast end supports with heavy duty sliding contact consisting of multi leaf phosphor bronze strips, nickel plated for corrosion resistance. 4mm socket terminals are fitted, allowing for use as a variable resistor or potential spanider.
RESONANCE APPARATUS
Useful for determining wavelength and velocity of sound in air by exploring the resonance of air column. Comprises of a pair of telescopically mounted metal tubes, one sliding inside other for varying the air column. Length of resonating air column helps in computing the velocity of sound. Mounted on stable base.
Resonance Apparatus
Specifications : Size: 30 x 20 x 104 cm – Weight: approx. 3.2 kg Mounted on base. Demonstrating standing waves. The Resonance Apparatus allows you to observe the resonance phenomena and to measure the speed of sound in air by exploiting standing wave and resonance effects in longitudinal waves. COMPNENTS : • Stand for Resonance Apparatus • Levelling Bulb (1000ml)
• Rubber tube • Resonance tube • Knob (Policarbonate, Yellow) M5 x 10 mm (2x) • Sliding Support with 2 holes. LAWS & PRINCIPLES INVESTIGATED : • Resonance • Resonance points for a certain frequency and their relation with the standing wavelength • Measurement of the speed of sound in air • Measurement of the wavelength of the incoming wave
RESONANCE APPARATUS, ON STAND
For determination of wavelength and velocity of sound in air through the study of resonating air columns. Comprises a graduated glass tube, mounted on retort stand with suitable clamp and boss, and is connected to a water reservoir through flexible rubber tubing. Reservoir also mounted on the support rod through retort clamp and allows the adjustment of water level in the glass tube. Complete apparatus mounted on a base.
RESONANCE JAR
Made of glass, mounted on circular base. Size approx 30x7.5cm [height x diameter).
RHUMKORFF'S COIL
High quality, trembler type spark coil. comprising primary of few turns of heavy wire wound on iron core, mounted horizontally, which is fed by DC current pulses. Secondary coil of very large number of turns of very thin gauge wire completely encompasses the primary and is impregnated with wax. The electromagnetic induction due to current passing through the primary makes the armature oscillate resulting in frequent switching ON/OFF of the current through primary. This produces extremely high rate of change of magnetic field in this Rhumkorff's coil, giving rise to a potential of several thousand volts in secondary, which is observable in the form of repetitive spark up to 25mm long across adjustable needle. Provided with a safety spark gap beneath needle socket terminals to protect internal damage to the coil against very high voltages. Output from the terminal can also be used to operate high voltage devices such as spectrum tubes etc. operates on 6-9V DC.
RING & BALL
A simple and economical device for demonstrating the thermal expansion of solids. Comprises an annular brass ring mounted on an insulated handle and a captive brass ball secured to the ring handle through a chain and having diameter just smaller than the ID or the ring. When cold, the ball easily passes through the ring but does not pass on heating. When heated to the same extent, the ball still passes through the ring showing the "expansion of a hole" effect.
RING & BALL 13mm diameter
A simple and economical device for demonstrating the thermal expansion of solids. Comprises an annular brass ring mounted on an insulated handle and a captive brass ball secured to the ring handle through a chain and having diameter just smaller than the ID or the ring. When cold, the ball easily passes through the ring but does not pass on heating. When heated to the same extent, the ball still passes through the ring showing the "expansion of a hole" effect.
RING & BALL 18mm diameter
A simple and economical device for demonstrating the thermal expansion of solids. Comprises an annular brass ring mounted on an insulated handle and a captive brass ball secured to the ring handle through a chain and having diameter just smaller than the ID or the ring. When cold, the ball easily passes through the ring but does not pass on heating. When heated to the same extent, the ball still passes through the ring showing the "expansion of a hole" effect.
RING & BALL 25mm diameter
A simple and economical device for demonstrating the thermal expansion of solids. Comprises an annular brass ring mounted on an insulated handle and a captive brass ball secured to the ring handle through a chain and having diameter just smaller than the ID or the ring. When cold, the ball easily passes through the ring but does not pass on heating. When heated to the same extent, the ball still passes through the ring showing the "expansion of a hole" effect.
RING AND BALL, GRAVESAND'S, Mounted on stand, with ball suspended from adjustable rod
Similar to RING & BALL but both ball and ring mounted on retort stand through a vertically adjustable collar, with ball suspended above the ring through a chain. Ball diameter 25mm.
RING AND BALL, GRAVESAND'S, ON STAND
Similar to RING & BALL but both ball and ring mounted on retort stand through a vertically adjustable collar, with ball suspended above the ring through a chain. Ball diameter 25mm.
RING AND BALL, GRAVESANDE'S
Similar to RING & BALL but both ball and ring mounted on separate insulated handles. Available in ball sizes (diameter]
RING AND BALL, GRAVESANDE'S 13mm dia
Similar to RING & BALL but both ball and ring mounted on separate insulated handles. Available in ball sizes (diameter]
RING AND BALL, GRAVESANDE'S 19mm dia
Similar to RING & BALL but both ball and ring mounted on separate insulated handles. Available in ball sizes (diameter]
RING AND BALL, GRAVESANDE'S 25mm dia
Similar to RING & BALL but both ball and ring mounted on separate insulated handles. Available in ball sizes (diameter]
Ring Magnet
Specifications : Size: 2.4 x 0.7 x 0.5 cm. Anular magnets with face poles.
RING MAGNETS, CERAMIC
Annular shaped, strong magnets of ceramic, polarized along cylindrical axis, i. e., north / south poles along the flat surfaces.
RING MAGNETS, CERAMIC 32x16x8mm
Annular shaped, strong magnets of ceramic, polarized along cylindrical axis, i. e., north / south poles along the flat surfaces.
RING MAGNETS, CERAMIC 36x18x6mm
Annular shaped, strong magnets of ceramic, polarized along cylindrical axis, i. e., north / south poles along the flat surfaces.
RING MAGNETS, CERAMIC 36x18x8mm
Annular shaped, strong magnets of ceramic, polarized along cylindrical axis, i. e., north / south poles along the flat surfaces.
RING MAGNETS, CERAMIC 45 x 22 x 8mm
Annular shaped, strong magnets of ceramic, polarized along cylindrical axis, i. e., north / south poles along the flat surfaces.
RING MAGNETS, CERAMIC 45x22x11mm
Annular shaped, strong magnets of ceramic, polarized along cylindrical axis, i. e., north / south poles along the flat surfaces.
RING MAGNETS, CERAMIC 53x24x10mm
Annular shaped, strong magnets of ceramic, polarized along cylindrical axis, i. e., north / south poles along the flat surfaces.
RING MAGNETS, CERAMIC 72x32x10mm
Annular shaped, strong magnets of ceramic, polarized along cylindrical axis, i. e., north / south poles along the flat surfaces.
