A threaded rod extends through the flanges with a lock nut threaded onto {HEAD ~ one end} and the nut engaged against the outside of one flange, and with an enlarged head on the threaded rod engaging the outside of {TAIL ~ the other flanges} whereby rotation of the screw in one direction will draw the lock nut and one flange toward the other flange to adjust the flanges toward the sides of switches with smaller widths 
A threaded rod extends through the flanges with a lock nut threaded onto { HEAD ~ one end } and the nut engaged against the outside of one flange , and with an enlarged head on the threaded rod engaging the outside of { TAIL ~ the other flanges } whereby rotation of the screw in one direction will draw the lock nut and one flange toward the other flange to adjust the flanges toward the sides of switches with smaller widths
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