Denver Instruments A-200DS Scale. This is a high precision dual range micro balance. Range 1 is 0-31g +/- .01mg. Range 2 is 0-200g +/- .1mg. Auto Cal button. Annual certification reports available. Balance was used to check pipette calibration (using H20 only). Similar to Mettler and Satorius. Included are WinWedge communication software, (works on any version of windows), RS232 to USB adapter, 4 Class 1 weights (1,10,100, 1000mg), owner's manual, and original shipping box. Near I-25 & Yale 80231. Cash only $400 obo.