Introduction: Extech Instruments is a full line supplier of handheld electronic measuring devices, other handheld measuring instruments, and portable printers. Extech is headquartered in Nassau, New Hampshire and was founded in 1971. Currently, it has over 80 employees and had a total revenue of $27 million in 2004. Extech also has factories in Hong Kong and Taiwan. Main products: including 15 types of testing and measuring instruments, thermal imaging cameras, portable printers, etc.