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Post Office Box-Plug Type (Constantan & Manganin Coil) Manufacturer,Supplier and Exporter in China

Product Code : EL-E-14424

Quick answer: The Post Office Box-Plug Type (Constantan & Manganin Coil) is supplied by Science Lab Supplies as part of its Electrostatics range, manufactured and exported from Jining City, Shandong Province, China for schools, colleges and laboratory buyers.

As a supplier of electrostatics, Science Lab Supplies manufactures and exports the Post Office Box-Plug Type (Constantan & Manganin Coil) for use across electrostatics laboratories in China and worldwide.

Description :

As a school science lab equipment supplier, Science Lab Supplies manufactures and exports the Post Office Box-Plug Type (Constantan & Manganin Coil), an apparatus within our Electrostatics range used across secondary school, higher secondary and undergraduate physics laboratories.

The 3-Ratio P.O. Box has sixteen non-inductively would coils 1, 2, 2, 5, 10, 20, 20, 50, 100, 200, 200, 500, 1000, 2000, 2000, 5000 ohms and two proportional arms each with coils of 10, 100, 1000, ohms.
The 4-Ratio P.O. Box has sixteen coils as above and two proportional arms each with coils of 1, 10, 100, 1000, ohms.
Also incorporates infinity gap.
Two spring keys having good contact for battery and galvanometer is also provided.
The whole system is contained in a superior quality wood box.
Resistance between 0.1 and 1111000 ohms can be accurately measured using a DC battery.

Available in 3-Ratio and 4-Ratio.

P.O.Box 3-Ratio and 4-Ratio (Constantan coil) consists of 12mm & 14mm thick rectangular brass block and have accuracy ±0.1%.
P.O.Box 3-Ratio and 4-Ratio (Manganin coil) consists of 12mm & 14mm thick rectangular brass block and have accuracy ±0.05%.

Institutions sourcing electrostatics lab equipment for their physics laboratories use the Post Office Box-Plug Type (Constantan & Manganin Coil) to support hands-on experimentation aligned with school and college syllabi. As part of a broader STEM lab apparatus setup, it complements other Electrostatics range instruments to build a complete teaching kit for a physics department.

Science Lab Supplies regularly ships export-packed Post Office Box-Plug Type (Constantan & Manganin Coil) units to schools, distributors and training institutes across China and worldwide, with technical datasheets and support for bulk and OEM orders available on request.

Built for durability in a busy laboratory environment, the Post Office Box-Plug Type (Constantan & Manganin Coil) is designed to withstand repeated handling by students while maintaining measurement accuracy over the equipment lifecycle.

Quality control checks are carried out before dispatch to confirm the Post Office Box-Plug Type (Constantan & Manganin Coil) meets stated specifications, helping schools and colleges standardise equipment quality across multiple laboratory setups.

See also the Zinc Plate with 4mm Plug for Electroscope for related Electrostatics experiments, or browse the full Electrostatics range. Contact our team via Contact Us for an indicative export quotation.

What the Post Office Box-Plug Type (Constantan & Manganin Coil) Is Used For

This electrostatics item is supplied for use in schools, colleges and institutional laboratories, supporting practical instruction and demonstration in science and laboratory departments. It forms part of the wider Electrostatics catalogue from Science Lab Supplies.

Key Highlights

Part of the Electrostatics range: Sold alongside related items from Science Lab Supplies' Electrostatics catalogue.
Built for institutional use: Suited to repeated use in schools, colleges and institutional laboratories.
Manufactured and export-packed in China: Produced at our Jining City, Shandong Province facility and packed for international freight.
Available for bulk and tender orders: Individual, classroom-set and tender-quantity orders can be arranged via our export team.

Exact technical specifications, materials and certifications are manufacturer-stated and should be confirmed with our team before ordering; contact us for a current product datasheet.

Who Uses This

Schools, colleges, distributors and laboratory buyers choose the Post Office Box-Plug Type (Constantan & Manganin Coil) to support science and laboratory departments, often ordering it alongside other items from the Electrostatics range when setting up or expanding a laboratory.

Serving Schools, Distributors and Tender Buyers Worldwide

Science Lab Supplies manufactures this equipment at its own in-house factory in Jining City, Shandong Province, China, rather than through trading agents, and exports to schools, colleges and laboratory distributors across Africa and other regions worldwide. Buyers sourcing lab equipment from Science Lab Supplies include institutions in countries such as Kenya, Portugal, Indonesia, Fiji, among many others. Many orders are tied to structured procurement programmes, including Turnkey Laboratory Projects, Ministry of Technical Education tenders and ADB (Asian Development Bank) tenders. Our export team prepares tender-ready documentation, packing lists and product specification sheets for these bids on request via Contact Us.

Why Source This from Science Lab Supplies in China?

Science Lab Supplies manufactures electrostatics equipment at scale from its Jining City, Shandong Province facility, giving schools, colleges, distributors and laboratory buyers access to competitive indicative FOB/CIF export pricing. As a China-based manufacturer and exporter, we quality-check units before dispatch and export-pack every order for international freight, with documentation support for institutional, distributor and tender-quantity orders.

Frequently Asked Questions

What is the Post Office Box-Plug Type (Constantan & Manganin Coil) used for?
It is used in schools, colleges and institutional laboratories as part of the Electrostatics range from Science Lab Supplies.

Is this suitable for institutional or bulk orders?
Yes. Individual, classroom-set and tender-quantity orders can be arranged; contact our team to confirm current options.

Can I get a product datasheet or sample before a bulk order?
Yes. Contact our team via Contact Us to request a datasheet, sample unit, or indicative FOB/CIF quotation.

What other Electrostatics does Science Lab Supplies offer?
The Electrostatics range includes items such as Electrostatic Pompon, Meter Bridge and Pencil Jockey, Electric Condector.

Related Products

Related Categories

Browse related ranges: Atoms and Nuclei, Physics Lab, Molecules in Motion.

Request a Quote or Catalogue

Contact our team via Contact Us for an indicative export quotation on the Post Office Box-Plug Type (Constantan & Manganin Coil), or browse the complete Product Catalogue.

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