Officers in Caldicot are investigating the theft of a BX Plant Tarmac Tacoat Sprayer BWH Model from a business on Dewstow Road.
The theft took place sometime overnight between Sunday 24th September and Monday 25th September.
The plant number which is unique is 1217123. The equipment has been valued at around £3000.
If anyone has any information about this theft, please call Gwent Police on 101.