Dedicated readout meter or SWT range of tensiometers.
The SWT-MR (Infield7) Manual Readout Unit takes and stores spot readings of soil water tension (potential), soil temperature and filling status. It  is suitable for use with all SWT Tensiometers. The SWT-MR has an automatic  offset correction for water column height aninstallation angle. The unit has memory for 250 readings and comes with a small carrying case. 
If continuous monitoring is required rather than spot readings, the GP2,GP1 and DL2e data loggers are all compatible with SWT Tensiometers.