This is going to be interesting without a pic. Seriously, it'll help if you draw it out on paper.
Overall: Length - 61 1/2" assembled length. (Blade slips off of pole for stowing.)
Pole: Length - 40 3/16" assembled length. This does NOT include the length of the pole that slides into the blade, or any of the plastic blade assembly. Length DOES include 5 5/8" long plastic handle on end. There is a 13/32" hole centered 18 7/8" from the handle end of the pole. (I'm sure it's a metric sized hole, but I don't have any metric drills to measure it with. The drill is loose, but a 27/64" drill won't fit.) The hole is drilled parallel with the width of the blade (This sets the blade angle while rowing). There is a 3 1/8" long plastic reinforcing sleeve slid around the pole, centered over the hole. Pole diameter - 1.262" (again, probably metric, but my calipers aren't 😉 ).
Blade: Overall length - 21 5/16" This includes all of the plastic blade assembly - 10 1/8" long x 5 5/16" wide rectangular blade; an 8 3/16" long section that tapers from the blade width to the tube sleeve OD (visualize a 'triangle- ish' shape), and a 3" long tube sleeve (that the pole slips into).
These are all the measurements needed to reconstruct the OEM oars (do they add up? 😳 ) - or to match something up close enough to work. Let me know if you have any questions.
Todd