determination of the width of the ridge. The hole at the end of the Krekeler sliding calipers serve as drilling gauge and drilling guide. Currently, the measuring instruments available on the market tend to be too high and not half as practical. The Krekeler sliding calipers are available only from HELMUT ZEPF. This development fulfills the requirements of modern day dental practice and is a big help towards more precise, faster and safer treatment. For more details please refer to our product assistant