The absolute value inequality of a length of 36.80 mm with a tolerance of 0.05 mm is given by |x - 36.80| < 0.05 and The compound inequality of a length of 36.80 mm with a tolerance of 0.05 mm is obtained as follows: |x - 36.80| < 0.05 -0.05 < x - 36.80 < 0.05 -0.05 + 36.80 < x < 0.05 + 36.80 36.75 < x < 36.85.