Hi Alan,
Sorry not to reply sooner, but I’ve been away with work. Great of you to reply and thanks for the leaflets – both very relevant.
Those leaflets are interesting and they have some similarities to my trailer, and some differences.
I have learnt elsewhere that the wheels were a Martin Markham unique feature in that the rims can be bolted inside or outside the centre flange to alter the tracking width.
I’ve found that there is an archive of Martin Markham literature at the University of Reading, in their archive of Museum Rural Life. When I get the chance, I’ll make an appointment and view the records.
You’ve made me think about visiting some local agricultural dealers again now I’ve got more information as that may generate some leads too.
If you think of anything else, please do let me know.
