Detail 01
Traditional standard glass gauge
It is the glass gauge used with a feeler gauge set for facing-curve measurement.

Independent shopping perspective
Theo Wanne’s Traditional Mouthpiece Glass Gauge is a standard glass gauge for mouthpiece measurement work. Used alongside a feeler gauge set, it is intended to measure the facing curve of a mouthpiece. It is a focused maintenance and inspection tool for work that requires that specific curve measurement, rather than a general-purpose mouthpiece accessory.

Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
It is the glass gauge used with a feeler gauge set for facing-curve measurement.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
It is used to measure the facing curve on mouthpieces.
The described use is with a feeler gauge set.