My name is Bansadri Ayubu Mandari, 35 years old, Tanzanian, Holding a bachelor degree in Marine Engineering Technology and Diploma in Mechanical Engineering from from government universities in Tanzania. I have been working with weight and Measures Agency ( WMA ) for 3 years and 4 months agency is under the government of Tanzania. This agency deals with to enhance customer protection in relation to legal metrology through calibration, verification and re-verification of measuring instruments used or intended to be used in trade, safety, health and environment and to promote, support and coordinate the use of accurate and reliable measurements. Nowadays I am Assistant Mechanical Engineer in Superdoll Trailer Manufacture.