The notation 2 × Ø6 means______.

The notation 2 × Ø6 is used to describe a hole or opening in technical drawings, especially in engineering or mechanical design.

Ø6 means a circular hole with a diameter of 6 millimeters.
(The symbol Ø stands for "diameter.")

2 × means that there are 2 holes like this.

So, 2 × Ø6 means:

"There are two holes, each with a diameter of 6 mm."

Example:

If you're looking at a part in a machine drawing and it says 2 × Ø6, it means the part has two round holes, and each hole is 6 mm wide.

Ø6 = One round hole, 6 mm across
2 × Ø6 = Two such holes, each 6 mm in diameter