This is a newer model but shows the idea Modify the tuners needle into a tach. Resilkscreen calibrat

1
Huskins Transistor Radio into Tachometer Mod
This is a newer model but shows the idea
Modify the tuners needle into a tach.
Re-silkscreen calibrated numbers from 0-8 across.
Have it back lit with through face lighting.
2
Face Plate
Track
Rotate Tach so 0 RPM is at 90 degrees
0
8.5
Rotating Guide pins
Track
11
cant be over 180 degrees
3
Guide Track
0
1
2
3
4
5
6
7
8
Track
Radio Face (actually this whole assembly is
upside down)
New Tach
4
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