For an apartment that consists of over 500-1000 water meters inside them, the nightmare of all the logistical and scheduling the annual calibration of those meters is very real and the task difficult. Similarly, a lab or manufacturer of water meters will not be ready to invest in a huge amount nor will have the space for a large water meter calibration bench/system. For these reasons, we have a Portable Compact Water Meter Calibration System (MiniWatcal).