Top Tube
effective ~54.0 CTC (center of seat tube to center of head tube - measured horizontally parallel to ground)
actual ~54.0 CTC (center of seat tube to center of head tube - measured along top tube)
Seat tube ~54.0 CTC (center of crank to center of top tube -measured along seat tube)
~55.0 CTT (center of crank to top of top tube -measured along seat tube)
~55.5 CTT (center of crank to top of seat tube -measured along seat tube)
Head tube ~100
For Reference: 1" head tube/ threaded steerer, 700C wheels, 768mm English threaded bottom bracket, 130 rear spacing horizontal drop outs, 100x9 front, 28.6 clamp on front derailleur, caliper rim brakes, mechanical group.