Of Woven picture: cm tall by cm wide
Of wood frame: cm tall by cm wide
It is perhaps worth noting that the National Railway Museum, York commissioned several tapestries from H. H. CALMON & CO. LTD, Keighley, Yorkshire. One of those, titled " Locomotive No: 2 " is identical to the picture above.
It seems probable that Calmon made woven pictures for a number of different outlets.