It happened at farms in Little Ouseburn and Aldborough overnight Sunday 18 November into Monday 19 November 2018.
Chain saws, power washers and rat poison were among the items stolen.
Anyone with information that could assist the investigation should contact North Yorkshire Police on 101, select option 2, and ask for Lisa Cobbold. You can also email firstname.lastname@example.org
If you wish to remain anonymous, you can pass information to Crimestoppers on 0800 555 111.
Please quote the North Yorkshire Police reference number 12180216078 (Aldborough) or 12180216080 (Little Ouseburn)