The Tertius is a long case clock, without the case. Free standing with a height of 1.9m(6'3").

It has a Grasshopper escapement, which moves quietly and lazily making it a pleasure to watch.

The pillars are standard stainless steel square tubing (30mm SQ(1¼" SQ)).

Both dial variations are included with the plans.

It also has a clutch which allows you to turn the minute hand and the hour hand will follow.