Thanks everyone for the good suggestions.  Sorry I forgot to include the 
resolution.  We would like to get 10 grams minimum but 1 gram would be 
ideal.  The 30 test blocks are 600mm long sections of 2x4 inch pine.

The test chamber these will be in is roughly 1 meter across and high by 3 
meters long.  One side wall opens to allow access.  Currently there is a 
rack which supports the test blocks which has 4 posts through the floor to 
some load cells.  This was designed to allow weighing all of the blocks 
together but now the science team wants to weigh each one separately.  They 
haven't decided if I will get to drill lots of holes in the chamber floor 
but that would make life much easier for me.

One suggestion made was to make one scale which could move from block to 
block during the drying process, similar to a printer head.  Continuous 
measurements are not needed so this is one possibility.  It would also be 
preferred over drilling lots of holes.

Thanks again.  I appreciate a good professional opinon.

Regards,
Andy

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