There are some more options besides rotary and dip switches.
But all is depending on the level of accuracy, quality and convenience you look for and your budget.
- headers (very cheap but good/useful, look for Gerry Sweeney solution)
- jumper cable (for perfection see beautyful robrenz Versa-Ohm Box solution
)
- Decimal thumbwheel Switch switch (see many professionlal and DIY solutions)
- relays or motorized switches, if you need automation
Also a Hamon divider design could be interesting (see ESI SR 1010 and fantastic Conrad Hoffman article
http://conradhoffman.com/HamonResistor.html)
Exept the one from robrenz (which I hope he will show us more about it and his genius skills) I have tried all or even still use them. If there is interest and if I find some time I can show some more details (especially Burster and ESI are awesome in any respect).
BTW my personal DIY favorite is the decimal decoder switch solution (very high quality possible, combined with conveninet "digit readout")