How to Use the World's Simplest
HO Knuckle Coupler Height Gauge
With the gauge centered on the track, run the car or locomotive up
to the gauge.
If the coupler slips into the gap, your coupler is mounted at the correct
height.
If the coupler head or uncoupling pin strikes the gauge,
appropriately adjust the coupler height until both clear.
[Note: Actual coupler gauge is black, but shown in
orange above for clarity.]
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