Burglars stole a tractor along with tools and equipment when they broke into a Horsham barn.
Police say that the haul, which included a diesel-powered jet wash, altogether worth around £16,500, was taken from a property in Brighton Road on July 17.
Meanwhile in another break-in on the same day, thieves stole around 50 pallets, worth £1,500 after breaking into premises in Storrington Road, Pulborough.
In a further incident on July 17, police say that intruders smashed a vehicle through the main gate of a farm in Kings Barn Lane, Steyning.
They destroyed both the gate and snapped a supporting post before joyriding around a 16-acre field.