Clockmaker: Johann Neumayer (ca. 1804 Vienna–1844 Vienna)
Date: Vienna ca. 1830
Measurements: H 151,5 x W 37 x D 21,5 cm
Signature: JOHANN NEUMAYER IN WIEN
Description: duration 3 months, mahogany veneered case with maple stringing, enamel dial with engine turned ormolu bezel, blued steel hands with centre sweep seconds hand, a compound compensated pendulum with knife edge suspension. (this allows a seconds beating pendulum to be much shorter than the normal length). Graham escapement.