Not based on the LM317-with-voltmeter-module design found online. Initially, I wanted to use a microcontroller and a pulsed current source with display and everything, but then came across Maxim Dallas Analog Devices application note AN106 Battery-Powered Circuit Measures Milli Ohms and Micro Ohms. Further research led met to the Milli-ohm measurement adaptor by Bernard C. Zschocke, published in Elektor 4/1992. It seems that this was the source of inspiration for AN106. Since it first appeared in Elektor, I decided to go down this road.