Seatstay Clamp Wheel Truing Gauge
A truing gauge that zip-ties to a seatstay or fork blade (12–28 mm round tube sits in the 90° V-cradle) so any bike becomes a truing stand — the 34 mm yoke gap straddles rims up to ~30 mm wide and five M3 screws running in 4.0 mm heat-set inserts act as adjustable feelers: four lateral (two per prong, 20 mm apart radially, so you can land one on the rim sidewall wherever you clamp) and one facing radially outward for hop. 104 x 52 x 12 mm, prints flat with no supports.
tool bicycle wheel-truing gauge