I was looking for a second caliper for woodworking to complement my Starrett caliper - and this fit the bill well.  I use the Starrett caliper in my shop for precision measurements when dimensioning wood for projects, or for measuring parts for assembly, or other shop tasks.  The problem was, I needed something to use outside in my carport where I store my wood, and where I do rougher cutting tasks.  I did not want to bring my 100$ Starrett outside for these "rougher" measuring tasks, plus you know how it is - once you bring the caliper to another location, you forget to bring it back in making it very inconvenient when you need it in the shop.  Plus, outside there was more of a chance of dropping the caliper, and the Starrett at $100+ was not the right tool.