the making of the limited edition longitude
machining the meridian line
A special ring of meridian line was provided to Bremont by The Royal Observatory Greenwich which has been skillfully machined from raw material using Bremont's in-house CNC machining expertise. Once manufactured, this special insert is set behind the sapphire crystal with Longitude coordinates for the Royal Observatory in Greenwich.
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THE ENG375
The 22 jewelled ENG376 movement boasts an enviable technical specification. With a depth of 4.95mm and diameter of 25.6mm, the ENG376 features a 65-hour power reserve, a silicon escapement, a custom balance bridge designed to reflect the architecture of Bremont’s state-of-the-art headquarters at The Wing, the home of British watchmaking, and the automatic movement is powered by a full tungsten rotor.
THE BEATING HEART
A significant component in this process is the free sprung balance wheel. This is the beating heart of the ENG376. 4 x Ø0.4mm screws are used to adjust the regulation, whilst the combination of the shock protection and a full balance bridge protect against vibration and shock loads.
Movements are carefully inspected prior to assembly of the Automatic Module. A stereo microscope gives a superior depth-of-field whilst a high definition camera projects the image to a screen to aid with training and data logging.
THE FINISHING TOUCHES
The Automatic Bridge is assembled with the one piece tungsten balance weight before completing the movement assembly. The 3 screws securing the bridge use a threadlocking compound to prevent them working loose as the oscillating weight spins.
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