Activity

You have to level the instrument using the foot screws. The linear spirit level is parallel to the axis of the two foot screws that are nearest to you.

Which way do you turn the foot screws to centre the bubble?
Click box to indicate your answer - then click 'submit' button.   
Use 'reset' button to try again

Turn both footscrews so thumbs rotate inwards towards each other
 Turn both footscrews so thumbs rotate outwards away from each other
 Turn both footscrews the same way so thumbs rotate towards the right
 Turn both footscrews the same way so thumbs rotate towards the left

    

Close this window