Police want to get in touch with motorists who may have witnessed a theft.
A man took a tripod used for surveying from the roundabout in Redbourn Road, Hemel Hempstead, on Wednesday, February 27, at around 3pm.
He then got into a Ford Transit van and drove off.
Officers would like to speak to a taxi driver who was parked in St Agnells Court, a woman driving a small red car north along St Agnells Lane and a man who was driving a black Vauxhall Vectra.
Det Insp Justine Jenkins said: “I am keen to trace the three people mentioned above as we are aware they witnessed the incident and could help with our inquiries. If this was you, please contact police.”
Anyone with information can contact Det Insp Jenkins via the Herts Police non-emergency number 101, quoting crime reference number D1/13/1262. Alternatively, call Crimestoppers anonymously on 0800 555 111.