HOW TO USE THE CRUX-CLOCK

To Find the Time

 

1. Set the date by rotating the graduated wheel. It is a good idea at this stage to fix the wheel in place with a paper clip.

 

2. Hold the Crux-Clock at arms length by the string so that it hangs freely.

 

3. Face the Southern Cross and rotate the pointing arm so that it is parallel to the major axis of the Southern Cross. Gacrux should be the outermost star.

 

4. Read off the time.

 

N o t e : The pointing arm is obscured by the back plate when it is pointed directly up. In this case point the arm directly down and alter it to align it with the major axis of the Southern Cross. The resultant time will be 12 hours out. This will be obvious as the time will be a daylight time.