Tobar 12459 - Make Your Own Mechanical Clock 31 Pieces Colourful cogs are assembled in the clear plastic case, to make a fantastic mechanical clock. With easy to follow, illustrated instructions the kit is suitable for children as young as six, forming a fun and educational project. Complete with a swinging pendulum and shiny bell. The finished clock will take pride of place in any child's bedroom or playroom. Finished clock 21cm.