Paul H. Jacobson, Luthier

Custom Hand-crafted Guitars

Hygrometers

Few tools can be more helpful to a guitarist in protecting a valuable instrument than a reliable, high-quality hygrometer.  That's because humidity can significantly affect the performance of a guitar, even its structural integrity.

Improvements in recent years in digital hygrometers, particularly in the sensors, have resulted in highly accurate and dependable devices.  The biggest problem with most of them, however, is that they are not calibrated to sling psychrometer standard, which is the definitional standard for relative humidity, but are calibrated lower
 

The one pictured above is called a HygroSet II, and it's different: the hygrometer mode is actually adjustable, using the knob on the right. This means I can recalibrate them just like I do with the expensive hair-element hygrometers I have in my workshop, using my psychrometer just like the weatherman does. But it's even better: YOU can recalibrate it yourself with an easy-to-use One Step EZ Hygrometer Calibrating Kit

All of my new hand-crafted guitars come supplied with this hygrometer.