We are offering calibration grade load cells. Morehouse universal calibration grade load cells from 500 lbf to 100, 000 lbf. astm-e74 class aa lower limit around 10% of range in compression and tension when calibrated in mvv or combined with the morehouse load cell meter model 4215 or comparable meter. astm-e74 class a lower limit around 2% of range in compression and tension. uncertainties of around 0.005% of capacity in compression and tension when combined with the morehouse load cell meter model 4215. note: morehouse calibration grade load cells above 50, 000 lbf will have a guaranteed uncertainty of around 0.01% of capacity or better (class aa lower limit of better than 20%). Morehouse is the only accredited commercial laboratory that can calibrate class aa lower limits up to 120, 000 lbf.