Something like this is what I carry with some additional CO2 cartridges:
http://www.cyclegear.com/spgm.cfm?L1=2&L2=54&L3=&L4=&item=INN_3515
except I have this for inflating:
http://www.cyclegear.com/spgm.cfm?L1=2&L2=54&L3=&L4=&item=INN_2425
Why not carry the CO2 plus a gauge? It's really easy to use. Just make sure you carry enough cartridges to inflate a rear tire (maybe 5-6 depending on tire size).
http://www.cyclegear.com/spgm.cfm?L1=2&L2=54&L3=&L4=&item=INN_3515
except I have this for inflating:
http://www.cyclegear.com/spgm.cfm?L1=2&L2=54&L3=&L4=&item=INN_2425
Why not carry the CO2 plus a gauge? It's really easy to use. Just make sure you carry enough cartridges to inflate a rear tire (maybe 5-6 depending on tire size).