Instrument Corporation

The Sensitive Research Instrument Corporation was founded in 1927 in New 

Rochelle, NY. They specialized in manufacturing high-precision measuring 

instruments, including analog voltmeters and ammeters for both AC and DC 

currents. The company was known for its quality craftsmanship and accuracy, 

making their instruments highly valued by collectors today. In 1975, the company 

was acquired by Electrical Service Instruments (EIS).