Physics & Chemistry Research Instruments

Our product range includes a wide range of resistance decade boxes, v- tech wheatstone bridge and kelvin double bridge.

Resistance Decade Boxes

8500/Piece Get Latest Price

Product Brochure
Box TypeResistance Decade Box
Model Name/NumberVT-MR100
Durable ConstructionHeavy Duty
Country of OriginMade in India

Minimum order quantity: 1 Piece

Wide range Decade boxes for product design or calibration checksHeavy duty durable constructionSeperate grounding terminalThree binding posts permit isolated substitutions1% Resistance substitution from 1 to 11,111,110½Seven Decade Ranges of ResistanceValues can be changed in 1½ increments0.3W resistors0.3½ internal zero resistance

V- TECH Wheatstone Bridge

9500/Piece Get Latest Price

Product Brochure
Size375*300*175 mm
Accuracy+- 0.05%
high sensitive galvanometer20uA/mm
Range0.001 to 11.1M
Country of OriginMade in India


  • Useful for measuring Low Resistance values
  • Range 0.001 to 11.1MΩ
  • Accuracy ± 0.05%
  • In-built 4.5V dry battery
  • Best Quality Manganin Wire is used for coils
  • In-built high sensitive galvanometer of 20uA/mm
  • Suitable for Murray Varlex Loop Test
  • Optional Light Spot Galvanometer can also be supplied

Kelvin Double Bridge

24500/Piece Get Latest Price

Product Brochure
Accuracy+- 0.05%
Measurement Ranges2 Milli to 11
D.C. OutputApproximately 0 to 10V continuously adjustable to give a variable current of 0 to 10 amperes dependi
Coil Resistance100 ohms approx
Input Voltage230 Volts A.C. Mains at 50 Hz
Time Period2 seconds approx. Two heavy brass terminals are provided for output
Country of OriginMade in India

Minimum order quantity: 1 Piece

Adjustable heavy Duty D.C. Current Source

It is a useful and economical substitute for a D.C. battery. The unit is mains operated and can deliver a continuously adjustable D.C. current of 0 to 10 amperes maximum.The unit consists of a variac a step down transformer, a bridge rectifier, filter circuit and an ammeter of 0 to 10 amperes to read current.

Conductivity Attachement

It is an an arrangement to hold specimens in the form of wires, rods, strips etc. Separate current and potential terminals are provided. Distance between potential points is 500 mms. It can hold speciments of any size between 1/2" dia to 42 S.W.G. wires.


Oxford Spot Reflecting Galvanometer Cat. No. 1701It is a sensitive null detecter to be used with the Kelvin Double Bridge. It is mains operated instrument with a built-in lamp and scale arrangement. The moving coil can be locked or set free accordingly as the instrument is in transit or in use.There is a zero adjusting knob also.A universal sensitivity reducing shunt is also built in.



This bridge is very suitable for the use of wires and cables manufactures. It is being extensively used for finding the reistance of transformer windings, contact resistance of relays etc.

Standard Resistance

There are 10 coils of 0.01 Ohm each arranged on a rotary dial plus a circular slidewire of total resistance 0.01 Ohm and 500 sub-division. Each sub-division is equal to 0.00002 Ohms on the normal range.

Multiplying Ratio

A rotary switch furnishes 5 multiplying ratios of x 100, x 10, x 1, x 0.1 and x 0.01Range of Measurement: The bridge has a range of 0.2 micro ohm to 11ohms


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Mohammed Khan (Service Manager)
11 A, Sudarar Street
Tatabad, Coimbatore - 641027, Tamil Nadu, India

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