One of the dimensions on page 161 of “Campaign Furniture” is incorrect. The height of the front stretcher of the Roorkee chair should be 12-1/2” from the floor, not 13-1/2”.
You can download a high-resolution pdf of the corrected page via this link. If you own the pdf of the book, you can make the correction in the text yourself (one of the beauties of having a file that is free of DRM).
Apologies for the error.
— Christopher Schwarz