Vintage Pelorus Sun Compass by H. G. Dietz Products Navigation Equipment. Manufactured by H. G. Dietz Products Co., 14-26 28th Avenue, Long Island City, N.Y. 11102. Enables you to calibrate magnetic compass' using the sun, find bearings, locate position, and determine coarse. Packed in a 5 1/4" x 5 1/2" x 1 3/8 " plastic case. clear top to cap is missing. Contains a 4 5/8" card with degree markings, constructed of non-corrosive metal. Sight and dial are capable of being rotated independently.Other than missing case top the unit is in goos condition.