7th Nov, 2017 12:00
Maritime and Scientific Models, Instruments & Art ('Fearless')
161
[M] A TWO-DAY MARINE HYDROGRAPHIC SURVEY...
A TWO-DAY MARINE HYDROGRAPHIC SURVEY CHRONOMETER, BY THOMAS MERCER, ST ALBANS, CIRCA 1950
the 4in. silvered dial signed as per title with 24hr dial, plugged winder aperture, open subsidiary seconds dial, up/down dial numbered '14752', blued steel hands, contained in drum case with stop/start lever and secondary contacts to side with counter-stamped plastic and aluminium lid, contained in sponge-lined wooden box of issue with numbered key, and MoD label to front -- 6 x 11 x 8¾in. (15 x 28 x 22cm.)
Rated to sidereal time these were used in conjunction with a tape chronograph for determining precise time of observations in survey work. The opening in the seconds dial reveals the electrical (seconds) contacts.
the 4in. silvered dial signed as per title with 24hr dial, plugged winder aperture, open subsidiary seconds dial, up/down dial numbered '14752', blued steel hands, contained in drum case with stop/start lever and secondary contacts to side with counter-stamped plastic and aluminium lid, contained in sponge-lined wooden box of issue with numbered key, and MoD label to front -- 6 x 11 x 8¾in. (15 x 28 x 22cm.)
Rated to sidereal time these were used in conjunction with a tape chronograph for determining precise time of observations in survey work. The opening in the seconds dial reveals the electrical (seconds) contacts.
Sold for £806
Estimated at £400 - £600
(inc. buyer's premium of 24%)
A TWO-DAY MARINE HYDROGRAPHIC SURVEY CHRONOMETER, BY THOMAS MERCER, ST ALBANS, CIRCA 1950
the 4in. silvered dial signed as per title with 24hr dial, plugged winder aperture, open subsidiary seconds dial, up/down dial numbered '14752', blued steel hands, contained in drum case with stop/start lever and secondary contacts to side with counter-stamped plastic and aluminium lid, contained in sponge-lined wooden box of issue with numbered key, and MoD label to front -- 6 x 11 x 8¾in. (15 x 28 x 22cm.)
Rated to sidereal time these were used in conjunction with a tape chronograph for determining precise time of observations in survey work. The opening in the seconds dial reveals the electrical (seconds) contacts.
the 4in. silvered dial signed as per title with 24hr dial, plugged winder aperture, open subsidiary seconds dial, up/down dial numbered '14752', blued steel hands, contained in drum case with stop/start lever and secondary contacts to side with counter-stamped plastic and aluminium lid, contained in sponge-lined wooden box of issue with numbered key, and MoD label to front -- 6 x 11 x 8¾in. (15 x 28 x 22cm.)
Rated to sidereal time these were used in conjunction with a tape chronograph for determining precise time of observations in survey work. The opening in the seconds dial reveals the electrical (seconds) contacts.
Auction: Maritime and Scientific Models, Instruments & Art ('Fearless'), 7th Nov, 2017
