I guess maybe a drill driver, but my must have tool from Sears no exception is my measuring tape. I keep two on hand, and also use the old folding rules. These do not conduct electricity. I do industrial custom bus work. A steel rule is the last thing I need in a 12,470 volt sub station. The drill driver remoes all the cover and access screws, drill holes etc. It is the most used and abused. My Makita is due to retire, and I do really like that angle and regular drill package. Angle drills are nice to have. A Knapp table saw tool center would be nice.