Maritime Directory

Columbus, Ohio, United States

Sensotec manufactures industrial sensors for the measurement of pressure, load, force, torque, displacement and vibration.

San Diego, CA, United States

Humphrey, Inc. designs and manufacturea guidance and control and directional survey equipment. Products include gyroscopes, rate sensors, accelerometers, potentiometers, pendulums and magnetometers for missile and aircraft manufac- turers for use in their instrumentation and guidance systems. Humphrey also makes cameras and optical compasses for petroleum and mining industry surveys.