If one looks at the compass platform photos in the TITANIC The Ship Magnificent book. It show metal tubes legs with a platform and four wooden teak extension on the four corners where a canvas sheet is folded around them. It wouldn't surprise me if the platform wasn't wood either to. The designed is very similar as used on other WSL ships to. I cant imagine over time any of that has survived. May be there a chance some parts of the compass might of survived been made from more durable materials.