Kern400-day clock pendulum springs by Kern Productspendulum springs, mechanical namelengthDrivermanufacturemodelitem No.pendulum springs, mechanical127 mmcoreS10070720pendulum springs, mechanical namelengthDrivermanufacturemodelitem No.pendulum springs, mechanical84 mmcoreM10A070721pendulum springs, mechanical namelengthDrivermanufacturemodelitem No.pendulum springs, mechanical86 mm8.0mmcoreM10N070722pendulum springs, mechanical namelengthDrivermanufacturemodelitem No.pendulum springs, mechanical79 mmcoreP10070723pendulum springs, quartz namelengthDrivermanufacturemodelitem No.pendulum springs, quartz102 mm26.0mmcoreQS10070725pendulum springs, quartz namelengthDrivermanufacturemodelitem No.pendulum springs, quartz82 mm26.0mmcoreQM10070726pendulum springs, quartz namelengthDrivermanufacturemodelitem No.pendulum springs, quartz82 mm26.0mmcoreQP10070727pendulum springs, slim-line namelengthDrivermanufacturemodelitem No.pendulum springs, slim-line83 mmcoreNeu WA070717