Neil,
I don't know anyone who can provide these 'off the shelf' but it is likely that Model Signal Engineering www.modelsignals.com sell the parts from which you can make up what you want.
Hope this is of help,
John Webb
I don't know anyone who can provide these 'off the shelf' but it is likely that Model Signal Engineering www.modelsignals.com sell the parts from which you can make up what you want.
Hope this is of help,
John Webb