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AGN Big Horn 19081 3 by 1/2 Inch Long Router Bit Centering Gauge P12677381AGN-19081 https://cdnimages.opentip.com/full/AGN/AGN-19081.jpg Big Horn 19081 3 by 1/2 Inch Long Router Bit Centering Gauge Manufacturer Part Number: 19081Big Horn 19081 Router Bit Centering Gauge. Fits both 1/2\" and 1/4\" router shanks. 3\" long by 1/2\". Use Big Horn\'s router bit centering gauge to precisely place your cuts and dadoes. Slip this pin-point precision gauge into your router collet (fits both 1/4-Inch and 1/2-Inch) and every cut will be on target! With your router inverted, hold a square in place and rotate the gauge to check for run out or wobble. 3-Inches long by 1/2-Inch diameter.Details: Features: Use to precisely place your cuts and dadoes Pin-point precision Fits both 1/4-Inch and 1/2-Inch router collets Use with router to check for run out or wobble 3-Inches long More Information: Model#19081BrandBig HornUPC766565190814CA Prop 65California Proposition 65 12677381 766565190814 0.1600lbs 0.00 0.00 0.00
Big Horn
8.94 2026-12-24 In Stock
customer review - by , October 10, 2025
5/ 5stars
This is a simple little gizmo that I can't believe I hadn't thought about before. At any rate, it makes centering any 1/4 or 1/2 inch shank router bit in a router table super simple and accurate. Highly recommended.
customer review - by , July 7, 2023
4/ 5stars
I bought two of these. They are reasonably accurate. I put them in a drill press and turned it on. The tips wobble a very slight bit, but they should work in most situations. If you are looking for something accurate to within a few thousands of an inch, then look for a different product. These should work for me so I'm keeping them.
customer review - by , May 5, 2022
5/ 5stars
Works as expected.

Big Horn 19081 3 by 1/2 Inch Long Router Bit Centering Gauge

stars Rating 5 | 3 reviews
Brand Big Horn
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UPC: 766565190814
SKU: AGN-19081
Price: $8.94
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Product Description

Manufacturer Part Number: 19081

Big Horn 19081 Router Bit Centering Gauge. Fits both 1/2" and 1/4" router shanks. 3" long by 1/2". Use Big Horn's router bit centering gauge to precisely place your cuts and dadoes. Slip this pin-point precision gauge into your router collet (fits both 1/4-Inch and 1/2-Inch) and every cut will be on target! With your router inverted, hold a square in place and rotate the gauge to check for run out or wobble. 3-Inches long by 1/2-Inch diameter.

Details:
Features:
  • Use to precisely place your cuts and dadoes
  • Pin-point precision
  • Fits both 1/4-Inch and 1/2-Inch router collets
  • Use with router to check for run out or wobble
  • 3-Inches long


More Information:

warning tips WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov.

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All AGN- items are non-returnable.
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Customer Reviews
5 out of 5
5 stars
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1 stars
0
By D. Ball
Date: October 01, 2025
This is a simple little gizmo that I can't believe I hadn't thought about before. At any rate, it makes centering any 1/4 or 1/2 inch shank router bit in a router table super simple and accurate. Highly recommended.
Rating: 5 stars [5 of 5 Stars!]
By Rodger Philips
Date: July 11, 2023
I bought two of these. They are reasonably accurate. I put them in a drill press and turned it on. The tips wobble a very slight bit, but they should work in most situations. If you are looking for something accurate to within a few thousands of an inch, then look for a different product. These should work for me so I'm keeping them.
Rating: 4 stars [4 of 5 Stars!]
By Kevin Farley
Date: May 11, 2022
Works as expected.
Rating: 5 stars [5 of 5 Stars!]
Items 1 - 3 of 3 reviews
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