I already own a delicate, glass hydrometer from Dupla. Plan on buying a digital refractometer, the Hanna one specifically.
Should I own a handheld refractometer to double check the digital refractometer?
The Vee Gee STX-3 is a bit of an investment, but I can't doublecheck with the hydrometer...
I want to get into the habit of checking my salinity more often.
The issue is using a salinity measuring tool that I can trust, and rely on without having to tinker with it every time.
An analog refractometer requires quite a bit of tinkering and cleaning for one measurement.
The Hanna Salinity...