Original WWII-era Roller-Smith Aircraft Radio Altimeter

Original WWII-era Roller-Smith Aircraft Radio Altimeter, complete with original factory box. Measures altitude in hundreds of feet and was used in military aircraft for low-altitude navigation. Features “Radio Altitude” dial with range adjustment and on/off control. Instrument appears complete and is housed in its original packaging, which is rarely found. Untested, sold as display/collector piece. Shows light age and storage wear. Excellent WWII aviation instrument with strong display and collector appeal.