Modsonic Instruments Manufacturing Company Pvt. Ltd. Offers Ultrasonic Thickness Gauge with Memory of 2000 Readings. Modsonic Instruments Manufacturing Company Pvt. Ltd. Is an ISO 9001 registered company. Modsonic Instruments Manufacturing Company Pvt. Ltd. Supplies ultrasonic testing equipment. Ultrasonic Thickness Gauge with Memory of 2000 Readings is available in the measuring range from 1mm to 300mm. Ultrasonic Thickness Gauge with Memory of 2000 Readings is provided with dual crystal [ transmitter receiver ] type probe. It is available under the model name of EDISON.