A generous Patron donated this incredible analog-electro-opto-mechanical clock that was once used to synchronize the world to a microsecond. Let’s find out what make it tick, literally. Link to the HP 115BR Manual: https://bama.edebris.com/download/hp/115br/HP_115BR_frequency_divider_and_clock_op_service_manual_1967.pdf Stuff that supports the channel: – Support us on Patreon: https://www.patreon.com/curiousmarc – Amazon links for the …
From: Retro Roundup