| Length, mm | 100, 150, 225 |
|---|---|
| Extension, mm Average for 200gm load | 120, 230, 430 |
Mechanics
Spring Steel Extension
Closely wound with loops at both sides, diameter 6 mm approx., wire of 19 swg.
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Closely wound with loops at both sides, diameter 6 mm approx., wire of 19 swg.
| Length, mm | 100, 150, 225 |
|---|---|
| Extension, mm Average for 200gm load | 120, 230, 430 |
