Product images of Astronomical regulator, movement back
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Manufactured in the UK
All products are printed in the UK, using the latest digital presses and a giclée printmaking process.
We only use premium branded inks, and colours are independently verified to last between 100 and 200 years.
Astronomical regulator, movement back
An astronomical regulator with a floor-standing case and hood made of teak. The trunk and hood have hinged, glazed, lockable doors. There is one pair of screwed electrical terminals on the left flank of the trunk, and two pairs on the right flank. Just below the centre of the trunk door is a manually operated lever for re-setting the auxiliary pendulum.
The 337 mm diameter silvered brass dial with separate silvered sight ring is laid out in a regulator style. It has concentric Arabic five-minute numerals outside a minute-track and internal observatory marks at five-minute intervals. The subsidiary seconds dial above the centre has Arabic ten-second numerals inside a seconds track with observatory marks at five-second intervals. The subsidiary hour dial below the centre has Arabic one to 12 hour numerals within a circle. The winding aperture is at the 41-minute position, 52 mm from the dial centre. There is an oblong aperture within the seconds dial for observing the adjustment of electrical contacts on the movement.
- Image reference: F1259
- National Maritime Museum, Greenwich, London, Ministry of Defence Art Collection