There is a new Signalong service which is extremely helpful. You text 07446462146 with SIGN and then a word to look up. They then send you a description of the sign right back.
You can do this up to 8 times a month for no additional charge – each use will still cost your normal network rate for a text. After that, if you want to, you can upgrade to get unlimited signs a month for £30 a year.
Many thanks to Susan Henderson, Edinburgh City Council for sharing this information.