Twemco designs high precision clocks that are of tourque movement with accuracy of
less than 0.5sec per month and on its individual tuned German movement, an accuracy
of less than 1sec per month.

Patented for its automatic re-setting for days of the months with other than 31 days and
even with its accounting for 29th February every leap year.  Once started, there will be
no further adjustment ever necessary.