|The following description was taken from the Boyce motometer instruction booklet:|
This Boyce accessory was supplied to mount on the cowl of the car immediately in front of the windshield. It has a clear bull's-eye lens at the front to throw a beam of light onto the motometer as well as a red and green jewel at the side to provide the usual courtesy crossing lights. A nickel plated acorn is mounted on the top of the instrument, which may be removed and in its place installed any one of the various types of ornaments on the market. The original selling price was $3.50.