chaser579
618
Cesium clock, I think...
When I was a field engineer with a big government contractor many years ago, we had clocks like these for maintaining the time and date to the equipment I was working on. Extremely accurate. Thanks! ^_^
Clock Details
By: cazalea : July 2nd, 2013-16:20
These are all units from ESE . ( ) The top one is the clock itself, ES 185, corrected by geosynchronous satellite contact, not by radio signals. This one is accurate to 10 nanoseconds to the master reference clocks run by the US and other governments. It ...