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of Bonnybridge, Scotland.
1947 Had works on the island of Seil, one of the Slate islands, 7 miles south-west of Oban, in the hamlet of Easdale. Article and images.
1948 'Barrmor Tool Works started in 1941 by Mr J. M. Rollo to make lathe tool-holders for Army mobile workshops....Now the extended works are making light lathe and precision vices and fourteen men, women and boys, who belong the locality, are employed...'
1954 'The first “baby” tractor, designed and built specifically for crofters and small farmers, has been produced at Bonnybridge. Delivery of the first production model was made last week to a farmer in Argyllshire. It is made and assembled at the St. Andrew’s Engineering Works, Bonnybridge. Apart from the three horse power petrol engine and the tyres, the tractor is of entirely Scottish manufacture. Designer Mr J. M. Rollo, to whom the Works belong, is drawing on the facilities of his Easdale and Inverasdale factories to make parts of the implement but the bulk of the work is done at Bonnybridge, where a new building has been erected for the project.' This was the Rollo Croftmaster.
See also lathes.co.uk