Equipment was stolen after a van was broken into in Norwich.
Police said measuring equipment and red-and-white petrol generator were taken from the white Isuzu pick-up truck on Foxburrow Road, Norwich.
It happened between 5.30pm on Monday, July 21, and 7am the following day.
Anyone who may have seen any suspicious behaviour in the area is asked to contact PC Keith Green at Norfolk Constabulary on 101 or Crimestoppers anonymously on 0800 555 111.
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