| The helicopter uses a scissor-type grapple which tightens on the logs as it lifts them. |
| The Prusik can slide along a rope when loose but tightens when weight is placed on it. |
| A typical Lancashire-pattern wing nut on the heavy screw tightens the blade. |
| Eventually he rams it into gear and inches it backward as the line tightens slowly until a sound like a rifle report pings through the chassis. |
| Gently pull the paper so that it tightens and you can crease the folds as shown to make it lie perfectly flat. |
| From the claustrophobic setting of an underwater oil rig to the potential nuclear meltdown each scene slowly tightens the screws of suspense. |
