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Vehicle crash speed indicator, has pendulum indicators moving against spring to lock on ratchet rod behind speed scale and primary crash direction indicator
Vehicle crash speed indicator, has pendulum indicators moving against spring to lock on ratchet rod behind speed scale and primary crash direction indicator
A vehicle crash speed indicator has two parallel fixed ratchet rods with spring braked pendulum indicators (6) that in a crash move along the rods and lock into place against a speed scale (7) that is set by the spring tension and also a primary crash direction indicator read through sight holes (9).
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