I have a 1" L.S Starrett Co. micrometer, with the vernier scale capable of reading accurately to .0001", that I use for my close work.
Please don't try to suggest reading to .0001" isn't possible as some doubters have. I worked in final inspection/precison measurement and calibration for five years. I know how to read a micrometer to .0001" and recalibrate it if needed.
Most calipers are not too good for close readings and the plastic ones I have seen are little better than a yard stick.