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Rockler Router Bit Center/Depth Gauge

Quickly set your router table fence a precise distance from the center of the bit—also works as a depth gauge for bits and blades.

Item #
55010
Rating:
98% of 100

When setting up your router table or freehand router, there are two primary adjustments to make: the fence distance and the bit height. Our Center/Depth Gauge makes setting both easy and accurate. Just set the hairline indicator for the distance you need from the fence to the center of the bit, hook it onto the bit shank, then slide the fence over until it touches the gauge. To use it as a height gauge, simply set it at your bit height, lay the foot flat on the table and raise the bit until it touches the arm. Half-round notches let you register the gauge to the center of 1/4'' and 1/2'' shank router bits. Alternatively, you can use the ''depth'' portion to measure to the edge of the cutter, rather than the middle of the shank.

Features:

  • Easily set your router table fence a precise distance from the center of your router bit—ideal for routing dados and flutes
  • Also doubles as a height gauge for setting the heights of router bits and blades
  • Half-round notches register to the center of 1/4'' and 1/2'' shanks
  • Broad foot rests against router table fence, and is offset so the fence opening isn't a problem
  • Hairline indicator adjusts for dead-on accuracy
  • 12'' long steel ruler features metric and imperial measurements
  • Nylon-tipped knurled knob secures gauge without marring ruler
  • (1) Rockler Router Bit Center/Depth Gauge
More Information
Brand Rockler
Weight 0.5500
Tech Spec
  • Length: 12''
  • Ruler Material: Steel
  • Graduations: Metric and imperial
4.9 / 5.0
26 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
23
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Great tool. Centering the router bit is now a piece of cake.
October 20, 2019
Purchased
3 weeks ago
Woodworking Experience:
Intermediate
Router Bit Center
Fast and easy to use.
October 13, 2019
Purchased
1 month ago
Woodworking Experience:
Intermediate
Works Great
This will really help with accuracy for my routers, router table and table saw.
October 6, 2019
Purchased
1 month ago
Woodworking Experience:
Intermediate
Rockler Router Bit Depth Gauge
My router is used mainly to cut dado's in some lumber. On top of that, I use the Router Table to make mortises in some legs for some tables I'm building for my use, and this tool comes in extremely handy when trying to set the depth and the bit distances. Before this tool, it was mainly a guessing game as to actual depth and distances. Now it's just line up this tool with the fence and the depth then is set. When all is done, it is just cut and done.
October 1, 2019
Purchased
2 months ago
Woodworking Experience:
Intermediate
Great tool.
September 17, 2019
Purchased
2 months ago
Woodworking Experience:
Intermediate
Handy setup tool
very handy both at the router table & over ar the tablel saw.
September 17, 2019
Purchased
2 months ago
Woodworking Experience:
Intermediate
Very good worth the money
Great product
September 15, 2019
Purchased
1 month ago
Woodworking Experience:
Intermediate
just what I wanted
September 14, 2019
Purchased
2 months ago
Woodworking Experience:
Intermediate
Router bit gage/center
This is a superb product. extremely accurate and easy to use. I recommend this product without reservation.
September 11, 2019
Purchased
2 months ago
Woodworking Experience:
Intermediate
Makes set up so much quicker.
I feel like I always wasted so much time setting my fence on the router table by checking and then double checking my distance and height. I guess I will always double check my settings still but I am able to do my initial settings so much quicker now.
September 11, 2019
Purchased
2 months ago
Woodworking Experience:
Intermediate
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Browse 5 questions Browse 5 questions and 57 answers
Why did you choose this?
Rockler Store
to make life easier
Doug O on Oct 22, 2019
good reviews
Calvin C on Oct 20, 2019
to make life easier
Doug O on Oct 22, 2019
I saw plans recently to build one of these, and although I like to build everything I don't have time, and this had a very reasonable price.
Jon on Oct 22, 2019
good reviews
Calvin C on Oct 20, 2019
To make more precise cuts
delbert flackmiller L on Oct 19, 2019
They are on my husband's Christmas list and we have bought several things in the past from Rockler and been really pleased.
H U on Oct 19, 2019
Hoping this will help far more than my fine print ruler and my constant misreads
RICK G on Oct 17, 2019
Makes it easier to measure to the center of a router bit.
marlin c on Oct 16, 2019
Going to use it with the router table that I built.
Bob on Oct 16, 2019
Saves time and is accurate.
Roxie B on Oct 15, 2019
Looks like this could save time and stress when setting up the router table for use.
Bobby Y on Oct 14, 2019
Looks like it will save me some time setting up my router
HARRY L JOHNSON J on Oct 13, 2019
Looks handy!
Steven F on Oct 13, 2019
Looks very handy and less time consuming.
richard c on Oct 13, 2019
Convenient
Dave P on Oct 13, 2019
For my router
Jay J on Oct 13, 2019
Looked handy
Phil G on Oct 12, 2019
Looks very useful
steve e on Oct 11, 2019
Looked like a useful tool
Jeff J on Oct 10, 2019
Looking for an easy way to make the setting in my router.
Angel L. G on Oct 9, 2019
looked to be a usefull addition to my shop
FRANK T on Oct 9, 2019
It will save me time and be more accurate.
D O on Oct 7, 2019
To help in setting up my router fence and router bit height. Should help to be more accurate when working.
Beverly N on Oct 7, 2019
Great features and great price (on sale)
Herman R on Oct 6, 2019
I like the design of this guage
Tom C on Oct 6, 2019
Like the idea of a way to set the fence on the router table with ease. Appears to fill a need for such a device. Can;t wait to try it.
David L on Oct 6, 2019
Needed this and reviews were 5 star!
Rich on Oct 5, 2019
Need a tool for accurately setting up router cuts
Daniel G on Oct 2, 2019
Looks good and I use my router table alot.
Russell M on Oct 2, 2019
Setting up on my router table for projects that I am working on and have to have precise settings.
Donald R on Oct 2, 2019
Convenience and precision
Lee M on Sep 30, 2019
I'm always looking for accurate, quick, and easy router and table saw set up.
Phil B on Sep 30, 2019
Looks very useful and easy to use.
Gary S on Sep 29, 2019
Will be helpful in set up situations.
Robert F on Sep 29, 2019
Will use it on the Router and Table saw
Red S on Sep 28, 2019
Seems like a good tool to assist setting up my router table or table saw.
Robert M on Sep 28, 2019
PEACE OF MIND, NEVER GO WRONG WITH ROCKLER PRODUCTS
Jesus A on Sep 28, 2019
I am making several items using the router and this will make the set up much easier and more accurate.
David O on Sep 28, 2019
This looks like the easiest way to set the router bit depth, and also to set the distance from the fence.
Brian S on Sep 28, 2019
Good reviews, and looks like it will speed up my router table and saw set ups.
Rich S on Sep 27, 2019
These look interesting and being such a chore to locate the center of the bit when making adjustments for different bits, this tool looks promising. lets hope so. anything to make the job go more smoothly is always better.
Kiddillon on Sep 27, 2019
Looks like it should do the job better than the current tools I use.
Bob P on Sep 26, 2019
easy way to set up router table.
John M on Sep 26, 2019
This will make set up quicker with greater accuracy
Richard F on Sep 24, 2019
Thought I would give it a try.
Jeffrey B on Sep 23, 2019
Looks like a useful tool!
William M on Sep 22, 2019
Great idea - wish I had come up with this. been looking for years to make bit offset setup easy. looking forward to see if this works as advertised
DAVID O on Sep 22, 2019
Looks like a good tool for setting up mortises.
Maria M on Sep 22, 2019
This should be a better tool than what I am using now.
M Fabricator on Sep 20, 2019
Makes router table set up faster and easier
Mark M on Sep 17, 2019
i hope this makes set up a lot easier and faster
Richard F on Sep 16, 2019
I saw plans recently to build one of these, and although I like to build everything I don't have time, and this had a very reasonable price.
Jon on Oct 22, 2019
To make more precise cuts
delbert flackmiller L on Oct 19, 2019
Hi, does it have any magnets built in?
Randy F on Aug 18, 2019
BEST ANSWER: No, the foot and sidearm are plastic, with metal hardware and ruler. The metal parts will attach to a magnet but are not independently magnetic.
I seem to most often want to position the fence from the edge of the cut, not the center of the tool. Am I not seeing something important here?
Ed O on Aug 19, 2019
BEST ANSWER: diameter of the bit varies, center is always in the same place, add or subtract bit radius for edge of cut line
Is there a minimum distance this tool will measure? Can you set it to say, 1/64 from center?
Tim A on Aug 28, 2019
BEST ANSWER: the answer is 2 fold. No there is no minimum and yes you "could" set it @ 1/64th from center...however.
The gauge will go to flush or zero with the fence or table. The ruler markings are in 1/16th and millimeter increments except the first inch is in 1/32nds. The gauge has a flat edge for setting edge depth, along with the 1/4 & 1/2 hollows for center measures.
The cursor in the picture looks well back of the center. It also looks like it is adjustable. Does the center point have to be found and the cursor adjusted to center before the gauge can be used as intended?
Joe M on Aug 19, 2019
BEST ANSWER: If you look at the pictures, you can see the ruler starts at 0, but there's an offset from the fence measurement because of the foot that squares up with the fence. I would guess the offset of the cursor is set up to negate the offset of the foot.
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