Hi Ian, that looks like an industrial process timer, a control panel could have several of these, which would control the batches. In my old job, they had several plant control panels with this type, but were all replaced with digital ones during panel upgrades over a few years, which were done in the annual shutdown periods. Try putting the photo in the camera icon in the Google search bar, as there were quite a few different makes, which all did much the same thing.
Regards Nick.