A nice inexpensive item, to go along with Jon's Krag, would be a reprint of the 1894 Ordnance Department booklet: "Description and Rules For The Management of the U.S. Magazine Rifle and Carbine Caliber .30".

These show up at gun shows and on ebay. The 1894 version shows the front and rear areas of the second type of model 1892 cleaning rod.

Although illustrated at "full size", the rod graphic may be slightly oversize and not conducive to precise measurement.

FWIW: Poyer gives thread size as .196"X26TPI.

'Ordnance Rules' illustration appears about 24TPI and about .300" length of threaded area.

Probably irrelevant, but, threaded end on three-section rods is approximately .162"X30TPI.

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