The photos show everything. I am not sure of the age, definitely an old, antiques gauge or meter. I am assuming it is from the 1920s, but that is strictly a guess or an assumption. I do not know for sure how old it actually is. And, I am assuming it is for an automobile. I can find nothing about this particular gauge anywhere on the internet, including eBay. So I am just assuming it is what is described in the title, I cannot guarantee it. And, I cannot guarantee that it works, as I am unable to test it.  It is missing the glass lens. You are buying this piece AS IS, NO RETURNS.  The photos are the description and they show the condition and the size. It could stand to be cleaned. Please use the zoom feature and ask any questions you may have. This will ship using UPS, FedEx or USPS, whichever I select at time of shipping.