DD is the major diameter of the thread. Thus 3/8-inch thread will have a 3/8 standing at the left most of the thread specification. The dimensions usually come at margins of an inch (1/2, Â¼, 1/8 ,1/16 etc). It must be noted that threads with a diameter smaller than Â¼ have been given special numbers, from 0 to 10.
The speed awareness course is an educational presentation that lasts approximately four hours. The workshop takes place in a classroom based scenario with up to 23 other motorists.he speed awareness course does not involve any type of test. You have been offered the opportunity to attend a speed awareness course because you were recorded driving above the legal speed limit. Although we do have the power to prosecute those who break the speed limit, we would rather persuade drivers to slow down.
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