Synchronome Master Clock

These are generally regarded as one of the most accurate systems, and thus were normally built to a very high standard. Although the factory did also supply these clocks in a kit for the home engineer to assemble himself. A poorly made kit version will run, but the resultant accuracy and finish of some of the kits can be a long way below the genuine Synchronome standard. All the factory built models have a unique serial number, and these models were said by the Synchronome company to be able "to keep time to within 2 seconds per week, and often much better"

This is helped by having a pendulum rod made from Invar, a metal that shows far less expansion due to temperature changes than does steel.

The best you can achieve is around 2 to 3 seconds per month if the clock is in good condition and is set-up correctly.

The operation of these clocks is very simple, like all good inventions are, and only uses one wheel, and less than half a dozen moving parts.

'Power Station Version' Page is HERE

For a detailed explanation of their operation go to Page 2

The style of case shown above was used from the early 1920's to the late 1940's. Earlier versions had a false pediment on the top at the front, whilst the case on versions made after the late 1940's have plain case with rounded corners.

Another indication for dating them is the electro magnet coils. These were wound with a green silk covered wire up until around the introduction of the round cornered cases, when they then went to a black covering.

For a full breakdown on dating see 'Barrie's Virtual Clock Museum'  HERE.