U-945 and M-3990 compaison in size

By Mike Spadafora; posted December 15, 2018
View Original: Click to zoom, then click to magnify (2155 x 2013) 638KB


What a difference nine years can make... The U-945 Mershon was the top insulator Thomas offered in 1899 the massive M-3990 was at the top of biggest Thomas designs in 1908!

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