Why had he never got round to building another sonic screwdriver?

The Doctor took the sonic screwdriver out of his pocket.

Rose realizes she needs the sonic screwdriver, and runs to find the Doctor.

The Doctor wakes suddenly, using his sonic screwdriver to stop the tree.

Keeping off the floor, the Doctor reaches the door to open it with his sonic screwdriver.

Its appearance is similar to that of the Doctor's favourite tool, the sonic screwdriver.

Rose uses the sonic screwdriver to remove the box so that the person can be taken out of the game.

"You'll be fine," Duffy said as he turned off his sonic screwdriver.

He carries a sonic screwdriver, which can help him get out of sticky situations!

The Doctor tells her to switch on the sonic screwdriver (which she had brought along to return to him) for light.

As she passes the Doctor, he sneaks her the sonic screwdriver.

Episode 1 marks the first appearance of the Doctor's sonic screwdriver.

I demand it back,' shouted the Doctor, recognizing his sonic screwdriver.

He uses to sonic screwdriver to open the hidden controls, and goes to the lowest level.

She retrieved a sonic screwdriver from the nearest tool kit.

Later after she has forgiven him, she calls it a sonic screwdriver.

He uses his sonic screwdriver to investigate an alien artifact.

The Doctor tries to use his sonic screwdriver to open the cell door, but to no avail.

The Doctor seals the doors with his sonic screwdriver.

He does this by using a sonic screwdriver that she was given by himself in his future (her past).

He smiled and held up his sonic screwdriver with childish glee.

He achieves this via the use of a sonic screwdriver given to her by his future self.

This is also the only time the Seventh Doctor was seen using a sonic screwdriver.

Later, he indicates that he needs time to "grow" a new sonic screwdriver.

Using the sonic screwdriver, the control centre begins to drop towards the Earth as the creatures on the outside take a protective position around it.