| 摘要 |
A safety lock device when combined with at least one pair of spaced screw fasteners, which by observation indicates tightness of the fasteners or looseness of either or both fastener, and additionally to limit counter rotation of either fastener to a small faction of a turn, characterized by a pair of replaceable caps anchored to each fastener, and a loose lanyard extending between the caps when the fasteners are in tightened condition, also any multiplicity of caps tethered by lanyards.
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