Hi,
Yuu can do a search for all the IVI drivers for DMMs that we have on www.ni.com/idnet. There isn't that many drivers (about 15). I'm not familiar with all the instruments in the list, but I think the smallest is our PCMCIA-4060 DMM, which you'd be able to use in a laptop. You can check the list of IVI drivers for DMMs and determine which one fits for needs.
Diego F
National Instruments