New lego seismometer instructions

Start with the hinge 




Using a piece of 500micron card or plastic as a spacer  the hinge is made from double thickness of tape.


Next the Armature is made




 The spring is held tight between two 2x4 lego bricks

 The hinge unit is added at this stage

Finally the Base and completed assembly 








 The hinged armature is added to the base

 The other end of eth spring is bent over and clamped between 2 1x8 lego bricks
 Finally a weight is added so that the sensor is balanced and free to move



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