Motorised and Motor-Cum-Hand Operated Insulation Tester is a Multi-purpose instrument for checking insulation and conductance during simulated operating conditions in high tension electrical and electronic fields. Cambridge Instruments and Engineering Co manufactures Motorised and Motor-Cum-Hand Operated Insulation Tester. Cambridge Instruments and Engineering Co also offers Electrical and Electronic Testing/ Measuring Instruments such as Tachometer, Light Meter, Thermometer, Power Meter, Power Supply, Frequency Meter, Function Generator, Scientific and laboratory instruments. Motorised and Motor-Cum-Hand Operated Insulation Tester is ideally useful for the electrical maintenance of Rotating plant machinery, Distribution networks, Communication cables, Insulators and servicing of Control and switching equipments, transformers and industrial installations. Di-electric Absorption test requires the voltage to be applied for several minutes. Operating an instrument under motor power allows this to be done easily. The high sensitivity of the instrument enables sensible reading to be obtained from such polarisation index tests.