It was all very well, the alethiometer telling her to be truthful, but she knew what would happen if she told the whole truth. She had to tread carefully and just avoid direct lies. Philip Pullman
On, said the alethiometer. Farther, higher. So on they climbed. Philip Pullman
She soon found the door the alethiometer had told her about. The sign on it said DARK MATTER RESEARCH UNIT, and under it someone had scribbled R. I. P. Another hand had added in pencil DIRECTOR: LAZARUS. Lyra made nothing of that. She knocked, and a woman's voice said, "Come in." Philip Pullman
It's an alethiometer. It's one of only six that were ever made. Lyra, I urge you again: keep it private. Philip Pullman
But first he gives Lyra the alethiometer, an instrument that uses Dust to reveal any truth and can answer any question when properly manipulated. Source: Internet
Lyra is given the alethiometer, which is capable of answering any question when properly manipulated and properly read. Source: Internet