Set of 4 small individual guitar-style banjo tuners with oval plastic buttons - dimensions
They are quite small tuners - the dimensions are:-
Tuner shaft diameter: 6mm.
Tuner shaft overall length: 20mm.
Distance from backplate to string hole: 16.5mm.
Button shaft length from centre of tuner shaft: 27mm.
Button shaft length from edge of backplate: 18mm.
Button: 17mm wide x 13mm deep Backplate dimensions: 16mm wide x 25mm long (diagonal).
Minimum string post spacing without filing down the backplates: 25mm between centres
Smaller spacings are easily achieved by reducing the length of the backplate and drilling new screwholes