On an inch height gage, the beam is graduated in inches with each inch divided into 10 parts. The tenth inch graduations are further divided into two or four parts depending on the divisions of the vernier. On the 25-division vernier, used on many older height gages, the 1/10 in. Divisions on the beam are graduated into four parts. The vernier permits discrimination to .001 in. Many newer height gages are making use of the 50-division vernier, which permits easier reading. On a height gage with a 50-division vernier, the 1/10 in. Graduations on the beam will be divided into two parts. Doscrimination of this height gage is also .001 in. The metric vernier height gage has the beam graduated in millimeters. The vernier contains 50 divisions permitting the instrument to discriminate to 1/50 mm.