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Double Portable Bridge

Double Portable Bridge

Product Code : JA-SI-8052

The Double Portable Bridge (SKU JA-SI-8052) measures very low resistances, from 0.00001 ohm to 110 ohm, using the double bridge principle with a four-terminal connection (C1, P1, C2, P2) to the unknown. A ratio dial sets the multiplying range, a main resistance dial covers 1 ohm in ten steps of 0.1 ohm, and a circular scale in series adds 0.1 ohm in 100 steps of 0.001 ohm for fine balance. A galvanometer is built in, and a double point press key brings the galvanometer and battery into circuit.

Specifications

Dials, range and connections as listed:

ProductDouble Portable Bridge
SKUJA-SI-8052
Range0.00001 ohm to 110 ohm
Ratio dialMultiplying range 100, 10, 1 and 0.01
Main dial1 ohm, ten steps of 0.1 ohm
Circular scale0.1 ohm, 100 steps of 0.001 ohm, in series with the main dial
GalvanometerInbuilt, with g1 and g2 terminals and a selector for an external galvanometer
KeyDouble point press key for galvanometer and battery
Unknown connectionFour terminals: C1, P1, C2, P2

Where the double portable bridge is used

  • Low-resistance measurement practicals in electrical and physics laboratories
  • Resistance of short conductors, contacts and windings where lead resistance matters
  • Four-terminal measurements on specimens held in a conductivity attachment

Scope of supply and ordering

The bridge is supplied with its inbuilt galvanometer and press key; battery, leads, quantities and packing are confirmed on the quotation.

Frequently asked questions

What range does the double portable bridge cover?
From 0.00001 ohm to 110 ohm.

Can an external galvanometer be used?
Yes, terminals g1 and g2 with a selector allow an external galvanometer instead of the inbuilt one.

How is the unknown connected?
Through four terminals, C1, P1, C2 and P2, so lead resistance does not affect the reading.

Related products

Other bridges are listed in our scientific instrument range.

Request a quote

To order the Double Portable Bridge, give the quantity on the contact page. For tender or project supply, see our tenders page.

Last updated: September 2026

   
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Office Address

Jain Scientific Suppliers
2475-84, Hargolal Road,
Ambala Cantt, Haryana, India

[email protected]

+91-85699-09696

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