Hello, I have a customer that purchase screws, bolts in box (ie 500 pieces), and sell 1 pieces at time.

The single pieces is used inside boms and the value is very few (about 0.0001 €) but I don't want to use 6 decimal in all the erp system... 

I tryed to use the following plugin:

https://apps.openerp.com/apps/modules/8.0/smile_product_uom_multi/... but it seem ok for the sales not for the purchase..

How you suggest to manage this case ?

Best regards