“It's nice to know that
I have a good
source for quality
guitar wood as
well as guitar parts
fabrication, such as
LMI's fingerboard
slotting service. 
As I am only set up
to slot 650mm
fingerboards, you
guys have saved my
butt on making me
several odd scale
lengths recently! 
I want you to know
that I appreciate
you guys and the
wood and services
that you supply
to me, a small,
independent luthier. 
Your fine fingerboard
slotting service
saves me a lot of
time and trouble,
for which I am grateful. 

Bob Desmond

LMI Digital Depth Gauge


The LMI Digital Depth Gauge can be used for measuring the depth of binding channels, a rabbet, a mortise, etc.

  • Compact and easy to use
  • Clear base plates provide an unobstructed view of measurement process.
  • Digital display can be set to decimal or fractional inches and metric (mm).
  • Reset zero with a press of a button for precise readout.
  • Hold feature freezes display for precise measurement.
  • Accurate to 0.001"

Luthier and Instructor Robert O'Brien shows

how to use the LMI digital depth and string height gauges.

MEASURINGDigitalDepthGaugeB650 MEASURINGDigitalDepthGaugeC650
  1. Turn on, place on flat surface with tip flush with the base.
  2. Press the button to set the tool to zero.
  3. Set the slider tip on the detail to measure and place the base on the reference surface.
  4. The displayed value is the distance from the bottom of the base (zero) to the detail.

SKU Product Name In Stock Each  
DDG LMI Digital Depth Gauge Yes $37.95

Also see the LMI Digital String Height Gauge