I have 2. A small 9x12x2 Tool Room and an 18x24x4 for the home shop that I would never take to work because people borrow without asking not to mention, never return them.
If it can't be locked up in the Toolbox, it stays in the shop at home. A good example would be my Digital Height Gage which stays in it's case until needed. Granted it's not a Mitutoyo or Starrett but still way too expensive ( Fowler ) to bring to a job.