TUNING FORK ELECTRICALLY MAINTAINED

On sturdy streamlined base with provision for horizontal or vertical use. Forks is manufactured from selected steel. Prong is 10x25x300 mm. Accurate frequency adjustment chrome plated, vibrations rate 60 per seconds. Electromagnet can work on 6 volts. The amplitude of vibration can vary by sliding the electromagnet inside prongs. Complete with stylet, mirror and counterpoise.