Tuning Fork (Electrically Maintained) - PE-221 / 17519

On sturdy streamlined base with provision for horizontal or vertical use. Forks are manufactured from selected steel. Prong is 10 x 25 x 300 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 electromgnet inside prongs. Complete with styled mirror and counterpoise.