Software used like caliper or vernier to measure until to 1"1/2, showing equivalence in decimal of inch and millimeters. As well as a converter from fractions of inches, to decimal of inches, feet, millimeters, centimeters and meters. With a resolution of 1/64 - 0,0156 or 0,4 mm. Application consists of two parts: The application Vernier helps to take measures until 1"1/2, showing its equivalence in Decimals of inches, as well as in Millimeters. This instrument makes jumps each 1/4 of inch to slide the indicator more quickly, and in steps upwards or downwards with a resolution of 1/64 This resolution helps to establish commercial measures applied in diversity tools, objects and measuring instruments. The second application is a calculator-converter of measurement units: This application can convert fractions of inches to decimal of feet and inches, as well as millimeters, centimeters and meters. Useful to make measurements in field and convert them in its decimal equivalent, or to measure decimal and convert them in fractions.