Nice shed Rod. Mine is similar in size. 2.6 x 3.8 metres. C6 lathe and X2 mill. Have had them for about 10yrs. Never miss a beat.
Happy building.
Rick
Sth Australia
Halfway through the same motor. I use metric and to convert all I did was to use the digital caliper. Set the caliper to Imperial measurement from the plans then press the mm button and you have your conversion.