Post Office Box-Plug Type (Constantan and Manganin Coil)
Product Code : EDS-LE-11983
Eduscope India is a leading Post Office Box-Plug Type (Constantan and Manganin Coil)
Description
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.
Available in 3-Ratio and 4-Ratio.
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.
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%.
