Device comes with only PEJ and PES with automatic internet adjustment and adjusting CAL program respectively. CAL has been offered for rapid setting of the poise precision, outer test weights at an supplementary price. Device is tough and sturdy due to Metal housing. Incorporating the tolerance range (check weighing) it has Input of 2 upper and 2 lower limit values through 4 arrow keys. A simple to hear indicator assists with the part division, dispensing or grading. Outline shield standard on all models with readout d =0,001 g.weighing space 170x150x100 mm.hasa detachable metal cover with pipette breach.