Metal marbling tray
From Discworld MUD Wiki
The metal marbling tray is about three feet long and about three feet wide. It is made of metal and could be placed as furniture. It can hold about 1 pint.
This metal marbling tray is not very deep as it only needs to hold a few inches of water but it is quite large to allow all sorts of papers and cloths to be dyed in it.
It weighs about a pound.
A marbling tray is required for the craft of marbling.
