TTL Technologies Pvt. Ltd. Manufactures Earth Ground Tester for Resistance Measurement. TTL Technologies Pvt. Ltd. Is an ISO/IEC 17025:2005 awarded company. The company manufactures Test Instruments. The Earth Ground Tester for Resistance Measurement is an easy-to-use earth ground tester. For ground resistance testing, the product is the first line of defence in detecting reliable ground connections. The unit features basic ground testing methods including 3-pole Fall-of-Potential as well as 2-pole ground resistance tests. The Earth Ground Tester for Resistance Measurement convenient size, rugged holster, and large, clear LCD display make it an ideal field earth ground tester, for most electrical grounding work environments. With a simple user interface and intuitive functionality, the earth ground tester is a handy grounding tool for electrical contractors, utility test engineers, and earth ground specialists.