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We had originally printed this Morse Code key to operate in "Cootie" mode. You can read about that here. It turns out using a Cootie key is fun and easy on the wrist, but..... learning to operate a Cootie key does take some practice. That said, the automotive spark plug feeler gauge gave such an effortless feel we decided to make a small modification and create a Single Lever Paddle from the original design.
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This mod allows usage with an electronic keyer in three terminal mode. The two terminals on the left can be shorted to quickly switch into Cootie mode.
Hardware parts list:
- Qty 1: 0.81mm / 0.032 in feeler gauge (hack saw blade also works)
- Qty 3: #8-32 x 1 in. Combo Round Head Brass Machine Screw
- Qty 3: #8-32 x 1-1/4 in. Combo Round Head Brass Machine Screw
- Qty 11: #8-32 nut
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