Check if you clicked on the don't use mouse button.If that does not work use the center button to move the mouse.
the move pointer
The pointer is lose.
The pointer on a meter moves in response to changes in the quantity that the meter is measuring. For example, in a water meter, the flow of water causes the pointer to move. In an electricity meter, the amount of electricity being used will cause the pointer to move.
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To move the pointer on a microscope, you can adjust the mechanical stage controls that move the slide horizontally and vertically. Simply turn the knobs in the desired direction to position the pointer over the area of interest on the specimen slide.
All you need to do is just press the arrow keys and the cursor will move in the direction of the arrow that has been pressed. If you press and hold the one of the Shift keys at the same time, then it will also select cells as the cursor moves.
the mouse pointer turn to arrow
the move pointer
The mechanical pointer meter operates off a slug and a coil to move the pointer
4 way arrow
Move the mouse pointer to rest on the item of choice
picture, text box, drawings..