Details
A Hezzanith Rapid-Reader sextant
the arc engraved Heath Navigational Ltd London SE9 No 631017, the black-crackle finished frame of three-circle design with seven shades, mirrors, adjustable telescope mounting, index arm, 6¼in. (5.9cm.) radius with micrometer vernier adjustment, with accessories in mahogany case -- 11in. (28cm.) wide
the arc engraved Heath Navigational Ltd London SE9 No 631017, the black-crackle finished frame of three-circle design with seven shades, mirrors, adjustable telescope mounting, index arm, 6¼in. (5.9cm.) radius with micrometer vernier adjustment, with accessories in mahogany case -- 11in. (28cm.) wide