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P.O. Box Ratio Manganin Coil

P.O. Box Ratio Manganin Coil

Product Code : JA-SI-8135

The P.O. Box Ratio Manganin Coil (SKU JA-SI-8135) is the closer-tolerance counterpart of the constantan P.O. box. Its coils are wound in manganin, and both columns are built on 14 mm thick rectangular brass blocks. The listed accuracy is +/-0.02% to 0.005%, and P.O. Box Ratio 3 and P.O. Box Ratio 4 versions with manganin coils are also offered.

Specifications

Listed values:

ProductP.O. Box Ratio Manganin Coil
SKUJA-SI-8135
Coil wireManganin
Blocks14 mm thick rectangular brass, both columns
Accuracy+/-0.02% to 0.005%
VersionsP.O. Box Ratio 3 (manganin), P.O. Box Ratio 4 (manganin)

Scope of supply and ordering

Specify Ratio 3 or Ratio 4 when you enquire; the quotation confirms quantities and packing.

Frequently asked questions

Why choose the manganin version over the constantan one?
Its listed accuracy is +/-0.02% to 0.005%, against +/-0.1% for the constantan box.

What are the blocks made of?
14 mm thick rectangular brass, in both columns.

Related products

Compare other resistance boxes in the scientific instrument range.

Request a quote

For the manganin P.O. box ratio, give the version and quantity on our contact page. Institutions and contractors buying under a tender can also reach us via the 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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