Hello and welcome to this week's What is it Wednesday. A reminder of the rules: Each member gets one guess. The answer will be revealed on the following Tuesday. The first correct guess has the honour of submitting the image for the next challenge. Sometimes there will be more than one thing in the photo or more than one way to accurately describe what the photo represents. The original poster will be the final judge of who is "most correct". This is obviously a thing. It is old, and it is out of doors. It still functions. It is not a macro shot. I have not processed it in any way other than SOOC. The key here is not just what it is but what it did or was used for.