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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:
94% 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
4.7 / 5.0
86 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
70
9
5
1
1
This works absolutely great!
March 24, 2020
Purchased
1 month ago
Woodworking Experience:
Intermediate
router bit center gauge
works very well quick and easy
March 18, 2020
Purchased
1 month ago
Woodworking Experience:
Intermediate
This is an excellent alignment tool. Both the router; centering and height adjustments are simple and accurate. I especially like the saw blade vertical measurement capability. This is also the perfect application for the plastic elements, since I refuse to subject expensive carbide teeth to a try square or even brass measuring blocks. The price also makes this device attractive enough to station one at the router table as well as the table saw.
March 15, 2020
Purchased
1 month ago
Great tool
Great tool for router and table saw setup! Use it all the time!
March 15, 2020
Purchased
1 month ago
Woodworking Experience:
Intermediate
Rockler router bit center depth gauge
Works very good. easy to set the bit height and fence accurately.
March 13, 2020
Purchased
1 month ago
Woodworking Experience:
Intermediate
Center Depth Gauge
Just received this item, so I've only played with it. Naturally, I'm in love with it already. You guys have the best stuff on the market in my opinion.
March 12, 2020
Purchased
3 weeks ago
Woodworking Experience:
Intermediate
Good inexpensive gauge
Simple idea that works very well. I was surprised at the low cost.
March 9, 2020
Purchased
1 month ago
Woodworking Experience:
Advanced
Bit centering/depth gauge is very versatile and I keep it close for different uses.
Very handy. Easy and simple to adjust. Locates exact center of bit and more.
March 7, 2020
Purchased
1 month ago
Woodworking Experience:
Advanced
GREAT
This new tool is great, with one tool I can set up the router bit height and space to the fence on the router table, GREAT and easy to use.
March 5, 2020
Purchased
1 month ago
Woodworking Experience:
Intermediate
I like it very handy tool to have
Great little tool I use it all the time
March 4, 2020
Purchased
1 month ago
Woodworking Experience:
Intermediate
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 5 questions Browse 5 questions and 58 answers
Why did you choose this?
Rockler Store
SEEMS LIKE A HANDY TOOL TO HAVE
Darrell S on Mar 27, 2020
Looks like set ups would be fast and accurate.
Ron F on Mar 25, 2020
SEEMS LIKE A HANDY TOOL TO HAVE
Darrell S on Mar 27, 2020
I have difficulty setting up my router. It just takes too long and is inconsistent.
Larry M on Mar 26, 2020
Looks like set ups would be fast and accurate.
Ron F on Mar 25, 2020
to be more accurate
Eugenio A on Mar 23, 2020
Looks like it will save some time
Parker A on Mar 23, 2020
Seems like a perfect solution to setting up a router table for cuts.
Thomas D on Mar 22, 2020
Quick and easy way to set depth!
doug merrill J on Mar 21, 2020
Yes those of us that use a router table need this tool!! Great idea guys thumbs up.
Robert A on Mar 19, 2020
Seems like a good way to set bits.
LARRY M on Mar 18, 2020
need a good gauge
ciak on Mar 18, 2020
I like the dual functionality!
Dana A on Mar 17, 2020
looks like it would be helpful.
H U on Mar 17, 2020
Ease of set up across different tools
jOEL glidewell R on Mar 17, 2020
More accurate settings
George C on Mar 16, 2020
Need to handle safely small parts on SawStop - having to replace items ruined in flood in house
Thomas W on Mar 15, 2020
More accurate router cuts
Brittany S on Mar 14, 2020
to make router table bit set up quicker and eaiser.
James on Mar 12, 2020
tired of guessing on distance set-ups with router table, this might be the answer.
Kirk A on Mar 10, 2020
Need an accurate to set tool depths
R W on Mar 9, 2020
just thinking it would be useful for setting up dado cuts on shaper and router tables.
chet c on Mar 9, 2020
BOUGHT THIS TO SEE IF IT HELPS SETTING UP ROUTER ANY EAISER.
LARRY S on Mar 5, 2020
Seems like a quick and easy solution for setting router and table saw bits and blades at a reasonable price.
Jbishsr on Mar 4, 2020
Solves a common problem
Wesley H on Mar 2, 2020
For centering my incra a wonder fence
Paul M on Feb 28, 2020
kid insisted he wanted it. will not break me to try it
Randy B on Feb 27, 2020
Will come in handy
J P on Feb 26, 2020
I think could be more accurate and quickly that tape meter to setup the router bit
Daniel O R on Feb 25, 2020
It will help align my Rockler router table
David W on Feb 24, 2020
wanted a quick setup for router
David R on Feb 23, 2020
will making projects a lot easier
Cecil C on Feb 22, 2020
Easy faster set-up
Roger U on Feb 21, 2020
I've had limited time working with my routers. Setting up and figuring specs has been frustrating. I'm hoping this reasonably priced tool will help.
Paul P on Feb 18, 2020
looks like will help set up time
Bryan L on Feb 18, 2020
Didn't have one.
Rodger V on Feb 18, 2020
unique tool, using as gifts to assoc.
Dan the boat guy on Feb 18, 2020
want to try
Paul H on Feb 17, 2020
Ease of setting my fence and my bit height.
Brian K on Feb 16, 2020
tkes the quess work out of making dados on the router table and bit height
David F on Feb 15, 2020
this may help
Edward T on Feb 15, 2020
This looks like it will really help to set up the fence when using a router table.
Terence J on Feb 14, 2020
A great tool for measuring Router Table set up whether depth of bit or height of bit on work piece.
Tracy on Feb 14, 2020
Seems like a good solution for setting fence depth
Craig C on Feb 14, 2020
Happiness with and quality of previous Rockler purchases.
Paul R on Feb 14, 2020
faster and more accurate set-up
Stanley K on Feb 11, 2020
Help with router setup.
Stephen B on Feb 9, 2020
I believe this tool to be very useful in router table setups
Crackerjackman on Feb 9, 2020
to make it easier to set up router table.
Don C on Feb 8, 2020
The item will improve my accuracy more easily than using a simple measuring device
Jeff H on Feb 7, 2020
I needed it to simplify some of my tasks
richard r on Feb 6, 2020
Simple intuitive design
Seth S on Feb 5, 2020
I have difficulty setting up my router. It just takes too long and is inconsistent.
Larry M on Mar 26, 2020
to be more accurate
Eugenio A on Mar 23, 2020
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.
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.
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
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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