A man and woman entered the store shortly before 4.30pm on Tuesday 27 September 2016. The man disconnected the security wire from two devices and left them on display. The woman then wandered up the insecure devices and placed them in her bag.
Both the man and woman then left the store without making any attempt to pay.
The devices, miniature desktop projectors, are valued at £399.99 and £449.99.
Anyone who knows who these people are, or who has any information, is asked to contact police.
Dial 101, press 2 and ask to speak to PC Daniel Walker,or email firstname.lastname@example.org
Alternatively, Crimestoppers can be contacted anonymously on 0800 555 111.
Please quote reference number 12160176351 when passing on information.