Experimental laser cane for the blind built at RCA'S David Sarnoff Research Center in Princeton, N.J. The cane weighed less than 5 pounds and was able to last for 10 hours before changing the batteries. Willam J. Hannan, a member of the RCA laboratory staff build the cane. The picture is in good condition. he picture is slightly curled from being in a book. The edges are a bit creased as well! The back of the pictures has glue stains from where the description was glued. The paper description is not attached anymore. The paper description has glue stains on the front and back sides of the paper.
