Late 19th - early 20th century, on a circular marble base having a cannon, a magnifying glass in brass frame, a dial, and a gnomon. Such instruments can be calibrated so that the magnifying glass ignites a primed cannon at a specified time.

5 x 9 x 10-1/4 in.

Private Collection of an Antiquarian, Charlotte, North Carolina

Some chips and scuffs to base; good condition.