A Noon-Day Gun
Comprising a brass cannon barrel and brass-mounted adjustable circular magnifying glass fixed to a circular white marble base, the first of tapering form with ring moulding behind the muzzle, knob-shaped cascabel, plain trunnions, and mounted on a plain bed, the last (minor chip) incised with blackened hour scale in Arabic numerals from 6 to 12 to 6 above the latitude marked '59.55.20'
22.7 cm. diameter base
