Just wanted to drop a quick note to say that the Koa (B&S&T) is some of the finest, most beautiful, wood I have seen. (and I've been a woodworker for over 40 years). This is going to become an incredible guitar!!  



MAG-ic Probe Electronic Thickness Gauge

Click here for measurement graphic. 

MAG-ic Probe is an electronic thickness gauge capable of accurately measuring any non-ferromagnetic material. It is designed to assist in measuring critical component thicknesses and provides an easy and affordable way to measure the thickness of large plates – making this tool especially useful on fully assembled instruments.

MAG-ic Probe uses magnets to penetrate the material to be measured. A probe is applied to one surface of the plate and a ball is applied to the opposite side. These attract each other and the MAG-ic Probe tool will measure and display the thickness in both mils (1/1000th inch) and millimeters (mm). MAG-ic probe V5.0 is a total redesign and is 1/4 the size of the previous version but still retains the same probe and trusted operation.

New features of MAG-ic Probe V5.0:

  • High contrast LCD for clearer display
  • On screen instructions for calibration steps and features
  • Display of Reference indication (Factory vs Workshop) for added calibration accuracy
  • 16-bit A/D converter for added resolution
  • Power from USB - save your batteries for mobile operation 
  • Lower overall power consumption
  • Simplified magnet options
  • MINI probe for lower center of gravity and more stable measurements

Included with the MAG-ic Probe V5:

  • 2 magnets - a 1/2" ball for guitars, plates or any object where access is not restricted and a 1/4" (6.35mm) cylinder magnet which should fit into most f-holes of violins and mandolins
  • Control unit with bright LCD display, inputs for the probe and USB connection
  • Mini Probe measuring 1.5" x 0.5" (40mm x 13mm)
  • USB cable 
  • Padded storage box

Free Downloadable Software - MAG-ic Probe Lite Software allows you to upload a picture of the instrument or object you are measuring to your computer and record each measurement you make to that picture.
Obtain this free software on the MAG-ic probe website

See the MAG-ic Probe User Manual

HomepageVIDEOtipsRed75Luthier and Instructor Robert O'Brien
talks about and demonstrates how to use the

MAG-ic Probe Electronic Thickness Gauge

Note: This video features a previous version of the MAG-ic Probe, but the concept is the same.

SKU Product Name In Stock Each  
MAGPRV5 MAG-ic Probe V5.0 Electronic Thickness Gauge No $359.00