This unique tool allows exact thickness measurements of stringed instruments to be made without disassembly. The small counter-magnet is passed through the instrument f-hole and follows the gauge around every edge and curve, allowing the exact thickness to be measured at any place on the body. Accurate to within 0.1 mm, calibrated for making measurements while holding the gauge in a vertical position. Quick and easy to use, with no risk of damaging even the most sensitive varnishes. Ideal for the study of old instruments, locating old crack repairs, making sound adjustments, etc. Also suitable for measuring other, non-ferromagnetic objects (e.g. boat hulls, plastic containers, ceramic vessels, etc.).
Comes in a leather sleave with instructions for use.
Magnets with rounded surfaces for high precision spot measurements also on concave surfaces. Measuring tube with wear-resistant plastic tip.

Measuring range 1 – 8 mm, 1 magnet, wear-resistant plastic tip.