The Fowler-Bowers XT Analog Bore Gages offer an economical solution to accurate shop floor bore measurement. Fast, accurate and easy-to-use, the wide application range of the XT Analog Bore Gage line may be purchased individually or in sets. Included in this set are the following items... .750" - 1.000" Measuring Head & Handle 1.000" - 1.375" Measuring Head & Handle 1.375" - 2.000" Measuring Head & Handle 2 Setting Rings