CD software developed by horologist Ron Hoppes is compatible with Excel 97 and Excel 2007.
Calculates Pendulum length for any beat rate, Compound pendulum rate from entered weights and
dimensions, Optimal mainspring length from barrel, arbor and spring thickness measurements, Number
of barrel revolutions from fully wound to unwound, Running time between windings, Barrel revolutions
and running time for changes in spring length, Beats/hour based on gear tooth counts for theeentire
train, Change in driving power and running time for changes in spring thickness. Instructions
included. Enter the required measurements and results are displayed instantly.