The ESAW Post Office Box Wheatstone Bridge (Cat. No. 11169) is a precision instrument designed for accurate determination and comparison of unknown resistances. Featuring 6 dials, non-inductive silk-covered resistance coils, and dual enclosed tapping keys for battery and galvanometer, this robust unit offers ±0.1% accuracy, making it ideal for educational, research, and industrial laboratories worldwide.Engineered for precision resistance measurement, the ESAW Post Office Box Wheatstone Bridge (11169) is a laboratory-grade instrument widely used in physics, electrical engineering, and research applications. Its decade dial system includes six dials — two with four ratio arms for fractional and multiple resistance values (1, 10, 100, 1000 Ω) and four with decade resistance units, giving a total resistance of 11,1100 Ω.The double silk-covered resistance wire coils are wound non-inductively to eliminate measurement errors. Two enclosed tapping keys enable safe and convenient battery and galvanometer connections, while its ±0.1% unit coil accuracy ensures dependable results for both classroom experiments and professional testing.
Realistic Use Case Scenarios
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Students: Learn and apply Ohm’s Law, electrical principles, and measurement techniques in physics and electronics coursework.
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Schools & Colleges: Ideal for practical laboratory experiments in science and engineering curricula.
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Science & Chemistry Labs: Supports high-accuracy resistance testing for academic research.
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Nursing/Medical/Engineering Colleges: Useful in electronics maintenance, biomedical engineering, and calibration studies.
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Industrial Labs & Research Centres: Suitable for product testing, circuit analysis, and quality control in manufacturing and R&D environments.
Trusted by institutions across India, Africa, Europe, Asia, and the USA, ESAW ensures export-quality laboratory equipment at an affordable price point, making it a top choice for bulk procurement by educational institutions and industrial buyers.
Technical Specifications
| Parameter |
Specification |
| Catalog No. |
11169 |
| Type |
Decade Dial with 6 Dials |
| Ratio Arms |
4 (Fraction + 1, 10, 100, 1000 Ω) |
| Total Resistance |
11,1100 Ω |
| Coil Type |
Double Silk Covered, Non-Inductive |
| Keys |
2 Enclosed Tapping Keys (Battery & Galvanometer) |
| Accuracy |
±0.1% of Unit Coils |
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