In a message dated 01/11/2007, johnjan@........ writes:

There  are two issues involved.  One is the absolute deflection due to  
adding a weight and the other is the electronic response, once some  
motion sensor has been applied.



Hi John,
 
    I find it easier to cut a measured length of Copper  wire and bend it so 
that it gives a three point contact - a small U loop and a  larger U loop at 
right angles to it. You can look up the weight either in wire  tables or by the 
diameter for that gauge and the density of Copper.
 
    Regards,
 
    Chris



   






In a message dated 01/11/2007, johnjan@........ writes:
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  are two issues involved.  One is the absolute deflection due to=20
  
adding a weight and the other is the electronic response, once some=20
  
motion sensor has been applied.


Hi John,
 
    I find it easier to cut a measured length of Co=
pper=20
wire and bend it so that it gives a three point contact - a small U loop and=
 a=20
larger U loop at right angles to it. You can look up the weight either in wi=
re=20
tables or by the diameter for that gauge and the density of Copper.
 
    Regards,
 
    Chris