1/2 Gauge Upgrade Kit
Over 900,000 GRR-RIPPERs sold
Four specialty tips for more accurate setups with your 1/2 Gauge.
Recommended By
FITFINDER 1/2 Gauge Upgrade Kit
- Four Precision Tips for Versatile Use: The Inside Tip, Outside Tip, Marking Wheel, and Up Tip allow you to find and transfer the 1/2 stock thickness or center to your tools with precision, especially for hard-to-reach places. (FitFinder 1/2 Gauge Sold Seperately)
- Quick & Secure Tip Changes: Switch between tips easily with the P4 Adapter and mounted Allen wrench for fast, seamless transitions between tasks, making complex woodworking tasks simple.
- More Than a Center Finder: Once the 1/2 point is located, you can quickly transfer it to set the height and depth of router bits and saw blades or align fences on table saws, drill presses, and bandsaws.
- Designed for Multiple Tools: Works seamlessly with table saws, router tables, drill presses, bandsaws, edge banding bits, V-groove bits, and more.
- Eliminate Guesswork – No more trial-and-error when setting tool heights or depths—achieve consistent, professional-grade results every time.
What's Included:
or buy separately
★ NEW PRODUCT
FITFINDER
1/2 Gauge Upgrade Kit
- Four Precision Tips for Versatile Use: The Inside Tip, Outside Tip, Marking Wheel, and Up Tip allow you to find and transfer the 1/2 stock thickness or center to your tools with precision, especially for hard-to-reach places. (FitFinder 1/2 Gauge Sold Seperately)
- Quick & Secure Tip Changes: Switch between tips easily with the P4 Adapter and mounted Allen wrench for fast, seamless transitions between tasks, making complex woodworking tasks simple.
- More Than a Center Finder: Once the 1/2 point is located, you can quickly transfer it to set the height and depth of router bits and saw blades or align fences on table saws, drill presses, and bandsaws.
- Designed for Multiple Tools: Works seamlessly with table saws, router tables, drill presses, bandsaws, edge banding bits, V-groove bits, and more.
- Eliminate Guesswork – No more trial-and-error when setting tool heights or depths—achieve consistent, professional-grade results every time.
100% Satisfaction Guaranteed
- Priority Mail Express: No delays.
- Priority Mail: 1-2 day delay. No delays for local delivery.
- First-Class Package Service: 1-2 day delay.
Automatic Measurements
The FitFinder Upgrade Kit is more than just a center finder—it's the ultimate upgrade and accessory to the popular FitFinder 1/2 Gauge by Microjig. It offers a complete solution for transferring 1/2 stock thickness with speed, precision, and ease. Featuring four specialized tips—Inside Tip, Outside Tip, Marking Wheel, and Up Tip—this kit allows you to not only find the center but also quickly transfer those dimensions to router bits, saw blades, or fences on tools like table saws, drill presses, and bandsaws. With the Marking Wheel, you can even scribe the exact center point directly onto your material for ultimate accuracy.
The FITFINDER was conceived while founder and inventor, Henry Wang, was developing the Dado Stop. While the Dado Stop solved the problem of cutting the width of a dado, setting the dado’s depth for half-laps still proved challenging. Henry realized that the solution was already there—from a Greek mathematician that lived over 2 millenia ago—Pythagoras. He applied this simple principle of geometry to a common woodworking process, and the FITFINDER was born.
Quick & Convenient Switching for Seamless Operation
With the included P4 Adapter, you can easily switch between tips for different tasks. The mounted Allen wrench ensures secure changes without downtime, allowing you to adjust tools or mark material quickly and intuitively.
Use it around your shop.
P5V+ Inside Tip
The Inside Tip is ideal for centering "Negative V" shapes like edge-banding router bits, guaranteeing a flush and clean fit every time.
P6V- Outside Tip
The Outside Tip works with "Positive V" shapes and round parts such as drill bits and includes a slot for quick alignment of your bandsaw blade to the fence—perfect for center-finding and transfer during resawing.
P7 Marking Wheel
The Marking Wheel is a steel scribe designed to mark the 1/2 point directly onto your material for fast, accurate transfer—ideal for dowel stock and precise chisel setups.
P8 Up Tip
The Up Tip lets you set the 1/2 point to the underside of bits and blades, enabling precise adjustments for height and depth in your tools. Essential for slotting router bits.
Work with a wide range of tools.
The FitFinder Upgrade Kit integrates seamlessly with various tools, including table saws, router tables, drill presses, and bandsaws. Its versatility makes it essential for woodworking projects that require precision centering, measuring, and marking. No more math, measuring, or trial-and-error test cuts!
Up Tip on table saw
Outside Tip on table saw
Outside Tip on router table
Inside Tip on router table
Outside tip on drill table
Outside tip on band saw
Use it around your whole shop.
Features.
FITFINDER 1/2 Gauge Upgrade Kit
FITFINDER Lock Miter Bit
Consistently well-fitted lock miter joints quickly and easily.
The lock miter joint can’t be beat for making columns, newels, posts and cabinet scribes, but the bit and stock have to be exactly centered together. Only Microjig’s Lock Miter Bit features the Center Finding Platform milled into the bit body at the precise center of the cutting profile. A solid measuring point to set the correct bit height the first time.
Once the height is correct, only the fence needs to be adjusted to perfect the fit. This greatly simplifies the router table setup for perfect joints with minimal test cuts and wasted stock. Now you can confidently add this important joinery to any of your projects.
Frequently Bought Together
FITFINDER Lock Miter Bit
FITFINDER Lock Miter Bit
FITFINDER 1/2 Gauge
FITFINDER 1/2 Gauge
MATCHFIT Dado Stop
MATCHFIT Dado Stop
MATCHFIT Dado Stop Pro
MATCHFIT Dado Stop Pro
What people are saying.
Got questions?
What's the most accurate way to mark my material with the FitFinder?
How to set up a resaw with the FitFinder?
How to find the 1/2 point in material taller than 3" with the FitFinder?
FitFinder 1/2 Gauge Quick Start Video!
FITFINDER Instructional Video
New MicroJig lock miter joint router bit has easy setup
Specifications.
Parts
- (1) P4 Leg
- (1) P5V+ Inside Tip
- (1) P6V- Outside Tip
- (1) P7 Marking Wheel
- (1) P8U Up Tip
- (-) Hardware
Parts
- 1/2 Gauge
Parts
- Lock Miter Bit
Router
Any material up to 3" thick.
Any material up to 3" thick.
Available in 1/2" shank size.
FN12-UG
FN12
MB-050-0750LM
Designed in USA
Made in Taiwan
Designed in USA
Made in Taiwan
Designed in the USA
Made in Taiwan
Patent Pending
Patent Pending
Customer Reviews.
Our Story
Family-Owned & Operated
Established 2001.
For beginners and pros alike, Microjig is reimagining an ancient craft and changing the way you work with wood.
Build your projects with more protection, more precision, and more passion. Work safer. Work smarter.
Designed in the USA by Woodworkers
Protecting Users in 37 Countries and Counting
1% Donated toNon-Profits andCharities
It all started in a garage workshop...
Henry was working on an intricate project and was challenged with cutting thin strips on a table saw. His frustration with traditional methods sparked one of the most innovative woodworking tools to come out in decades.
After countless hours and prototypes, the Grr-ripper was born. Henry has continued to innovate, and Microjig now offers multiple unique product lines all over the world.
WOOD Innovate Award
WOOD Innovate Award
Rated 5/5
Rated 4.8/5
Best for Table Saw Safety
#1 Best Overall Push Block
Best High-end Push Block
Best Multifunctional Push Block
Award Winner
Award Winner
