Ever wanted to drive one of those superfast Rennen bikes? Here's your chance, with this excellent polygonal motoracer from the creators of the F1 World Championship series.

Ever wanted to drive one of those superfast Rennen bikes? Here's your chance, with this excellent polygonal motoracer from the creators of the F1 World Championship series.

The Screen Compass allows you to measure the radius, circumference and area of circular or polygonal shapes on your screen simply and quickly. The perfect compliment to the Screen Calipers and Screen Protractor, the Compass is simple and easy to use.

The Screen Compass allows you to measure the radius, circumference and area of circular or polygonal shapes on your screen simply and quickly. The perfect compliment to the Screen Calipers and Screen Protractor, the Compass is simple and easy to use.