Textron Inc., Providence, R.I., agreed to acquire Industrial Technology Inc., Mineral Wells, Texas, and Opto-Electronics Inc., Oakville, Ontario.

The companies will become part of Tempo, a unit of Textron that develops tools and technologies to install, test and measure the performance of copper and fiber-optic networks.

Textron has acquired eight companies in the telecommunications test equipment industry during the past three years.

Industrial Technology manufactures a test set that permits the transfer of telephone service from one cable to another without interruption of service. It also designs, manufactures and markets digital signal identifiers and tone probes, cable-fault locators, and a line of electronic marking and locator equipment. Projected 2001 sales for Industrial Technology are $20 million.

Opto-Electronics produces high-speed fiber-optic test instruments for the telecommunications, aerospace and defense industries. Products include reflectometers, fiber-optic systems, pulsed lasers and photodetectors. Opto-Electronics also offers various services including training, consultation and calibration of equipment. Projected 2001 sales are $5 million.

Tempo brands include Chesilvale, Datacom, Greenlee Data/Signal/Voice, IMAP, Progressive, RIFOCS and Tempo.