This is a comparison of two 1927 Martin guitars--a 000-45 and a 00-45. I alternated between them on each of two Irish tunes--Morgan Magan and the Wise Maid--and spliced the four video tracks together.
Both guitars have 12 frets to the body. The 000 is 15" wide and has a 25.4" scale length. The 00 is 14-1/8" wide and has a 24.9" scale length. They were built in the same batch at the Martin factory in late 1927 and are in original condition with the exception of replaced bridges.