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Rockler Center/Offset Marking Tool

Straddles your board to mark a perfectly centered line, or you can use the notches to mark offset lines from 1/16'' to 1/2'' from the edge in 1/16'' increments.
Item #
90% of 100

Our Center/Offset Marking Tool straddles your board to mark a perfectly centered line along the face or edge of boards up to 1-1/2'' wide or thick. Just insert your pencil into the center hole, rotate the tool so the guide posts contact the material, then scribe. Alternatively, you can use a pencil in the notches to mark lines from 1/16'' to 1/2'' from the edge in precise 1/16'' increments. It's great for marking out mortises and rabbets, or for making reference lines for drilling holes. The tool accepts standard wooden pencils and has an onboard pencil storage slot. An embedded magnet lets you store it on any ferrous metal surface, such as a power tool, tool chest or magnetic storage strip.


  • Fits standard wooden pencils
  • Center hole holds pencil in perfectly centered position as you scribe your line
  • Notches for offset marking let you scribe off-center lines, or lines near the edge of large panels
  • Offset notches account for the tip width of a sharpened pencil for an accurately scribed line
  • Integral magnet allows easy storage on ferrous metal surfaces
(1) Rockler Center/Offset Marking Tool
More Information
Brand Rockler
Weight 0.1500
Tech Spec
  • Material: Polymer with embedded rare earth magnet
  • Offsets: 1/16'', 1/8'', 3/16'', 1/4'', 5/16'', 3/8'', 7/16'', 1/2''
  • Compatible With: Standard wooden pencils
Style Pencil
4.5 / 5.0
398 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Excelent addition to my colection of tools.
December 5, 2019
3 weeks ago
Center marker tool
Everyone should have one of these.
November 28, 2019
over 3 years ago
Woodworking Experience:
handy i love it
November 21, 2019
over 3 years ago
Woodworking Experience:
Perfect. A great tool with numerous applications.
November 15, 2019
over 2 years ago
Very handy when fastening a work piece to the edge of another piece. Quickly find the center line.
October 29, 2019
over 2 years ago
Woodworking Experience:
Simple & Genius
Centered lines or offsets are super simple. Strong magnet and a pencil hole for handy storage were two bonuses I didn't know about when I bought the tool. NICE! Definitely recommend it.
October 14, 2019
2 months ago
Woodworking Experience:
Excellent tool
Vary accurate and easy to use
October 13, 2019
2 months ago
Woodworking Experience:
Very handy, excellent for establishing center line and the magnet makes storage for next use a plus...reccommend to all!
September 11, 2019
3 months ago
Woodworking Experience:
Awesome tool
September 10, 2019
3 months ago
Center finder
Works well and holds the pencil. I thought the shipping was high
September 8, 2019
3 months ago
Woodworking Experience:
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 8 questions Browse 8 questions and 66 answers
Why did you choose this?
Rockler Store
beverly h on Dec 4, 2019
It will be faster then using a center find ruler.
Eric M on Dec 3, 2019
beverly h on Dec 4, 2019
Simplicity and effectiveness
Clinton R on Dec 3, 2019
It will be faster then using a center find ruler.
Eric M on Dec 3, 2019
A very easy tool for the purpose. I know I can replicate it on my on, but simple is better.
Daniel L on Dec 3, 2019
easy to use.
Jonathan H on Dec 2, 2019
It will be easier to find the center line and marking offset lines, rather than measuring and using an adjustable square, as I have for years.
Michael F on Dec 1, 2019
Useful and I can afford it
Michelle L on Nov 30, 2019
Browsing flyer, I found this tool and bought as stocking stuffer for Christmas.
Carol P on Nov 29, 2019
looks convenient
Timothy H on Nov 16, 2019
Many hours spend doing research in the Internet and these are the best deals that I was able to find. I trust the Rockler brand; I have no doubt that I will be satisfied with my purchase.
MARCOS E R on Nov 14, 2019
husband wanted for Christmas
Mary M on Nov 12, 2019
Improve accuracy
Michael P on Nov 4, 2019
I definitely wanted an easier way to find center line on wood edges.
Mark H on Nov 3, 2019
Been needing a center mark tool, the offsets are an added bonus
Kim W on Nov 2, 2019
I can use it for home projects.
Jack V on Sep 22, 2019
Purchased this for scribing different margines of "reveal" in trim work & stairs
Michael Allan R on Sep 21, 2019
James B on Sep 17, 2019
Faster option than using a marking gauge.
RONALD S on Sep 3, 2019
Accurate and multiple applications
Eduardo on Sep 2, 2019
to measure accurately
Paul D on Aug 24, 2019
appeared to be excellent marking tool
Robert on Aug 10, 2019
marking centers and offsets
kelly L on Aug 7, 2019
Seems like a more accurate method of centering marks on board edges
Michael W on Aug 5, 2019
Yet another time saving tool for my workshop,.
Donald W on Jul 20, 2019
Wanted something to find the center of a board's edge that it easy and accurate. This looks like it will do the job perfectly.
Frank C on Jul 19, 2019
To find center.
Daryl D on Jul 1, 2019
Handy in the shop
Jim A on Jun 26, 2019
I thought it may be a easy way to find centers of edged boards.
James E on Jun 21, 2019
Looks very handy
Mark J on Jun 19, 2019
Have needed something like this for a while now!
Frederick H on Jun 19, 2019
Fast and easy way to find center of edges.
Wayne K on Jun 5, 2019
Lee F on May 28, 2019
easy use
Timothy R on May 23, 2019
Looks like a handy measuring tool.
gerald w on May 20, 2019
Faster and more accurate marks
Ronald H on May 20, 2019
Looks neat
Nathaniel G on May 19, 2019
Saw good reviews and it appears to be useful.
Applewoodie on May 8, 2019
gift for husband
Lori L. D on May 7, 2019
Simplifying marking is always a winner and results in less mistakes.
CityguyUSA on Apr 17, 2019
Too may misguided screwing mistakes.
Daniel M on Apr 11, 2019
I need a center marking tool and and the offset is a bonus. I was going to make it but I need the time back for now..
Leon s on Apr 10, 2019
Looks very beneficial and time saving.
William A on Apr 9, 2019
Easier then measuring
Joy P on Apr 8, 2019
Have some homemade ones but want to check out the measuring slots on the sides and see how much time it saves if any.. We may make a review on these on you tube..
Richard K on Apr 6, 2019
Brian F on Apr 3, 2019
Quick, easy tool.
Catherine L on Apr 3, 2019
Building wood shop in my basement
Charles F on Mar 23, 2019
Looks like a useful, time saving tool.
Ken on Mar 22, 2019
good tool
Michael K on Mar 21, 2019
no one else had this and I needed it and the price was right
jeffrey on Mar 19, 2019
Simplicity and effectiveness
Clinton R on Dec 3, 2019
A very easy tool for the purpose. I know I can replicate it on my on, but simple is better.
Daniel L on Dec 3, 2019
Does it come in metric?
Danny B on Nov 22, 2015
BEST ANSWER: It makes no difference. It finds the perfect center every time if used properly. Before You would use a rule or measuring tape and mark several points and then line them up. Then take a Straight Edge and connect your marks. This tool is so simple that its value can be easily overlooked. I have tools that ran up into the hundreds when they where new. Somebody was really thinking when this came to mind.
Is there a tool for a 3/4" offset? I need to follow a 48"R arc.
jmotlagh on Jul 12, 2017
BEST ANSWER: Most speed squares have a 3/4" notch that can be used to scribe this measurement. It is the smallest notch on most speed squares and goes up from there.
Where can I buy your tools from in the UK please . Thank you from andy w.?
andy wright on Feb 11, 2018
BEST ANSWER: This not a product question at all from Andy. Purchasing Rockler products locally in the UK could be nearly impossible, but I believe Rocklers will deliver/ship to UK. Please contact Rockler's directly Andy
Would this work on round stock?
Nikonguy on Jan 30, 2018
BEST ANSWER: You could but you would need to set up a stop on one side to keep it from rolling over the round stock.
What is the maximum lumber size this device will stradle?
Alan W on Dec 23, 2017
BEST ANSWER: A 2x4 not much more.. Great for finding center of doors fast.
Can this be used to make a parallel line along the face of a round table?
Pamela S on Feb 7, 2019
BEST ANSWER: I would say Yes to this question. If there is a flat top to sit on, you would be able to create several lines even with the edge of the table. That is on a round table. I would think that it would not work on an oval table.
I have the Rockler Center/Offset Marking Tool, but unfortunately a normal pencil will not fit in the provided hole (too small), unless I have a defective one. So, my question is where can I find the correct size pencil?
Gary on Dec 9, 2018
BEST ANSWER: The opening is too small for most round #2 pencils so I use the hexagon shaped ones for a perfect fit. The one I buy is a DixonTiconderoga #2 HB. They're inexpensive and also a good general shop pencil to have around. These can be purchased just about anywhere and there are other brands out there that'll work as well.
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