I'm planning to make myself a reference resistor; basically just putting a Vishay Z201 in a box with some banana sockets. E.g. this 10k
http://www.mouser.co.uk/Search/ProductDetail.aspx?R=Y145310K0000V9LI'm going to make two - a 100R and a 10k (because those are the values mouser has easily - I don't see a 10R or 1k). Less so for the 10k, but the 100R at least likely benefits from having 4-wire connections on it, so do two onto each leg in the case.
I wonder - if I mount the resistor on stripboard, I can attach two sets of wires to it, one on each side. For minimising the error, should I "cross over" the force vs. sense flows? I.e. should I put the force on two diagonal corners and the sense out of the other two, or doesn't that matter?
Relatedly, if I'm using a larger scale SMT resistor on a PCB (such as a 2010wide) and adding 4-wire sense support, should I pass the two flows in parallel, or cross them over?