Measure very small resistances by building your own Milliohm-meter - Blogs - Virtual Classroom for ADI University Program - EngineerZone
Milliohm Meter Version 1.5 - Barbouri's Electronics Projects
Half Ohm - Projects of Jaanus Kalde
Build Your Own Low-Resistance Meter - Projects
Open hardware Milliohmmeter, microohmmeter, microvoltmeter, and accurate ESR meter based on STM32F373 processor and AD8253 instrumentation amplifier (DIY do it yourself hobby construction)