The offender stole the tool from a site in Pinehill Road on Wednesday at about 12.47pm.
He then got into the passenger side of an old style silver Volkswagen Golf, which drove off at excessive speed towards Sandhurst Road.
The thief is a white man, about 35 years old, of medium build and with very short hair. He was wearing blue jeans and white trainers.
Anyone with information should contact police on 101 or Crimestoppers anonymously on 0800 555111.
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