Clock Fit Ups are Fun Time Savers Clock fit ups are utilized to quickly create timepieces. Clock fit ups, likewise referred to as clock inserts, can be taken a prefab item, something that comes completely put together, therefore conserving the buyer from needing to develop a watch from scratch with individual components. This technique makes good sense when restorative or replacement job is done to an attractive heirloom or frame and the timepiece is taken into consideration of lower worth or relevance.