Visit the following websites where you can learn more about metrology, science and how to apply math to real world.

René Descartes - Rules for the direction of the mind
https://archive.org/details/descartessrulesf032479mbp/v2
National Institute of Standards and Technology
http://www.nist.gov/
NASA – National Aeronautics and Space Administration
http://www.nasa.gov
Mitutoyo America
http://www.mitutoyo.com/
Bureau International des Poids et Mesures
http://www.bipm.org/
A Brief History of Measurement Systems
https://standards.nasa.gov/history_metric.pdf