We will email you to ask for any pictures you have.
Please take one picture close up and square on to show detail. It is most important that the photo is not taken from the side or with the camera angled downwards. If the dial is high up, please just do what you can, thanks.
A second picture should show the location of the dials. Perhaps place a bag below it and count blocks up, put a Post-it note on the dial block, use an arrow or ring in Photoshop to indicate the dial. A picture can be better than a thousand words. But if it is simpler to describe the location, please do that.