Date added: 27/01/2021 16:21:40
A shop made fabricated backplate 4 1/4" dia threaded 3/4" BSF 0.570 thick the boss is 0.475" high. Fabricated from a disc with the boss welded on then machined ---If memory is good it was fitted to a Portas Model S 60 plus years ago ! FREE well maybe a donation to St John's Hospice Lancaster plus postage.
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