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omprises wooden former with terminals & engraved metal circle marked 0 – 180 – 0, divided & figured every 45º, with magnetic pivot, wound with 30 turns enamelled copper wire & complete with 75 mm magnetic needle with brass bearing. Maximum opening voltage 4.5 V. more...
Comprises wooden former with terminals & engraved metal circle marked 0 – 180 – 0, divided & figured every 45º, with magnetic pivot, wound with 30 turns enamelled copper wire & complete with 75 mm magnetic needle with brass bearing. more...
It is used to detect the presence and direction of electric current by the deflection of a magnetic needle. It consists of an insulated former wound with 30 turns of copper wire and provided with two terminals and circular scale marked 0-180°-0 divided and figured at every 45°, with magnet pivot and 75mm ma more...
Comprises wooden former with terminals & engraved metal circle marked 0-180-0, divided & figured every 45º, with magnetic pivot, wound with 30 turns enamelled copper wire & complete with 75mm magnetic needle with brass bearing. Maximum opening voltage 4.5V. more...
Comprising plastic fomer with terminals and circle marked 0-180-0 divided and figured every 45 degree, with magnet pivot, wound with 30 turns enamelled copper wire and complete with 75mm magnetic needel with brass bearing operates on voltage 4-6 volts. more...