This Harvard Apparatus Isotonic Transducer is exceptionally sensitive and stable, requiring a minimum of force to produce a substantial electrical signal. It uses precision ball bearings and a graduated optical density vane that moves between an infrared source and a sensor.
The notched, pierced input lever is 90 mm (3-1/2 in) long for easy connection to muscle tissue. A spring and anchor post are supplied for converting the unit into a Transducer capable of recording frog/heart muscle tension for auxotonic applications.
This Transducer has a 2 m (6.6 ft) shielded integral cable which terminates in a specific connector for use with one of the amplifiers/signal conditioners below.