The Pioneer Co of Chicago were manufacturers of multi gauge switch (turnout) motors including the Jupiter and Challenger, designed for use with 0, H0, 00 and Q track, Q being an attempt to make 0 gauge track true to the US 1/4 inch scale.
 
Pioneer Jupiter multi scale switch (turnout) machine (box only)  | 
 
Pioneer Challenger multi scale switch (turnout) machine  | 
 
Pioneer Challenger multi scale switch (turnout) machine  | 
 
Pioneer 0 gauge dwarf type working searchlight signal kit  | 
 
Pioneer 0 gauge pole type working searchlight signal kit  | 
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