The theft occurred in the early hours of 11 July, according to Phil Sokell, product manager for Optical Hardware which is based in Barnsley.
Around 860 pairs of Visionary DX 8×21 and DX 10×25 compact binoculars have gone missing.
Phil added: ‘If you are offered Visionary binoculars, particularly DX models, at a vastly reduced price from an unknown source, please report the incident to both ourselves and your local police as soon as possible.’
Anyone with any concerns is urged to call Phil on 01226 203275 or to email him at email@example.com
Optical Hardware sells items including tripods and other accessories.