Rees ran a cautious finger over the shell of ruined books.

Tammuz put down the drinks and poked it with a cautious finger.

It had crackled slightly under the push of a cautious finger.

He reached in with a cautious finger and pulled the skin closer, removed it from the cage.

Nebogipfel touched a rail of the machine, with one cautious finger.

Doc lifted the pad between two cautious fingers and dropped it back into the box.

He started to probe his skull with cautious fingers.

When Sophie put a very cautious finger out into it, it was neither hot nor cold.

She lifted the ruffled edge of the cap with a cautious finger.