1938 McElroy Bug

MacElroy P500 Bug

MacElroy Telegraph Apparatus Co (TAC) Bug

Electrical Specialty Mfg. - "Cedar Rapids Bug" The kit key

Les Logan SpeedX 500

Lionel WWII military J-36.

Early model SpeedX note unusual placement of adjustment screws on the yoke.

Japanese Coffin Bug

Bunnell J-36

Vertical Viz Key

Right Angle Viz Key