Micro-Controller based Automatic Twist Tester is used for accurate measurement of twist per meter or twist per inch of the twisted yarn. The Twist Tester has the facility of both untwist/ twist methods for measurement of TPM of twisted yarn. The Twist Tester is designed with auto stop facility for motor and equipped with in-built sensor. Micro-Controller based Automatic Twist Tester is made of quality grade raw material which ensures optimum durability along with long lasting trouble free service.