LEGO Pendulum Clock with Building Instruction

100% LEGO and time accurate pendulum clock! Fully mechanical with Power Functions. Based on the Billion Year Clock by Brick Technology:    • Making A Billion-Year Lego Clock   Detailed and easy to follow building instruction with clear guidelines how to build, time adjust and run the clock is available on Rebrickable: https://rebrickable.com/mocs/MOC-2141...