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Measuring Instruments & Equipment #272059

Demonstration Meter

range 50-0-50 mV d.c.

DEMONSTRATION METER A demonstration meter and may be converted to an a.c. or d.c. Voltmeter and ammeter with selection of various ranges for each mode. With a high quality moving coil, spring controlled movement with full scale deflection of 5 mA or 100 mV d.c The long pointer has a spade end and is clearly visible from a distance. Fitted in case with glass front and back. The instrument can be used with different dials to give different voltage and current ranges. All dials are interchangeable and each has a plug coupler to fit the instrument. The coupler connects appropriate resistors, shunts, or rectifiers to convert the instrument to the scales have clear bold figures and are marked on both sides to enable the lecturer also to observe the reading from the back of the instrument. A zero adjuster allows the instrument to be used for centre zero dials. One dial of range 50-0-50 mV d.c. is supplied with the instrument.

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DIGITAL BENCH METER

Accuracy ±0.3% typical
Linearity 0.2% typical

DIGITAL BENCH METER Digital meter for general purpose laboratory use housed in tough case use of a 3 digit cover most of the ranges.

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Daniel Cell

size 125 x 75 mm

DANIEL CELL Comprises an outer copper vessel 125 x 75 mm with terminal and perforated shelf, a zinc rod 125 x 12 mm with brass terminal and Porous pot 150 x 50 mm, complete.

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LAURENTS HALF SHADE POLARIMETER

LAURENTS HALF SHADE POLARIMETER Suitable for determining specific rotation of optically active substances. It has Laurents quartz half shade device which makes the system sufficiently accurate and at the same time simple suitable for use with sodium light. The circular head is attached near to the analyzer. Vernier movable over the scale enables reading upto 0.1 A 200 mm tube is provided with the instrument. Mounted on a sturdy tripod stand. Adjustable for height.

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Spherometer

Screw pitch 1 mm

SPHEROMETER Brass dial head 40mm dia with steel screw head divided in 100 divisions, vertical scale 10-0-10 mm, Distance between legs 40 mm.

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Moving Coil Meters

Accuracy ±2.5% 0-30, 60 Volts.
Overall size 90 x 110 x 90 mm

MOVING COIL METERS Mounted on a plasticacrylic stand, with permanent magnets, spring controlled movement, jewelled bearings, hard polished pivots, and knife edge pointer. For D.C. use, each meter is with colour coded terminals.Scale length approx 50 mm, dial dia 65 mm mounted in desk stand with two colour coded terminals. Overall size 90 x 110 x 90 mm approx. Accuracy: 2.5% 0-30, 60 Volts.

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Ganong Potometer

Comprises a graduated narrow bore, horizontal glass measuring tube with a vessel for a plant shoot at one end having a vertical limb with a stopcock and a funnel fitted by a ground glass joint. Mounted on a stand.

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POLARIMETER, SENIOR

length 220 mm

POLARIMETER, SENIOR Designed to accept observation tube upto 220 mm length. Its improved rotating half shadow system at the front ensures perfect focus and clear definition. With angular glass scale 0-360 divided into degrees and reading upto 0.05 with micrometer A sugar scale from 30 to 120 reads up to 0.1 sugar degree. Supplied complete with two polarimeter tubes. 100 mm and 200 mm, and dust cover.

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Polarimeter

size 100 mm and 200 mm

POLARIMETER The circular head is attached near the analyser and vernier movement on the scale enables the reading of optical rotation accurate upto the accuracy of 0.10. Soleils Bi-Quartz or Laurents half shade device which makes the instrument accurate and simple and simple for use with white light (day light) or sodium light. The polarimeter tubes made form Borosilicate glass with metal fittings at both ends. The tube end covers with glass round disc, optically true with rubber washers to make it leak proof. Complete with a set of two polarimeter tubes (100 mm and 200 mm), to measure the angle of rotation of optically active substance in solution. Packed in a case.

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Industrial Laboratories BALANCE

Capacity 200 gm,

BALANCE, CHEMICAL For Use in Colleges and Industrial Laboratories, Advanced beam engraved with a rider scale, for use with 10 mg rider, balancing nuts, agate bearings and knife edges fitted on a wooden board in a polished wooden case. Capacity 200 gm, sensitivity 0.5 mg.

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HAND STROBOSCOPE FOR RIPPLE TANK

HAND STROBOSCOPE FOR RIPPLE TANK Simple form stroboscope use with ripple tank, a disc of 250 mm dia. with 12 equispaced slots and a finger hole, rotating on its axis, with handle.

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