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30" Aluminum Notch Base Survey Monument (Not Flared) With 3.25" Domed Cap

1 - 10
11 - 24
25 - 99
100 - 249
250 or more
All prices USD
Availability: In Stock
NO CHARGE for stamping 11 or more markers. There is a $35 setup charge for stamping fewer markers.
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Outside Row
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Inside Row
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Product Details

A1NB30 - 30" Aluminum Pipe Survey Monuments

Berntsen Made in America LogoA1NB30 Aluminum Notch Base Monument (Not Flared).  The A1NB30 is identical to the A1NBF30 except that the four notched split legs have not been flared.  This gives you the option of driving the monument into the ground or flaring legs in the field, using a cresent wrench or vise grip wrench.

  • Designed to meet the requirements of federal, state, and county surveyors
  • Similar in appearance to the old Regulation Iron Pipe Monument as found in Chapter IV-7 of the Manual of Instructions for the Survey of the Public Lands of the United States - 1973, Department of the Interior Technical Bulletin No 6
  • Safe-D-Notch design has a 3/16" (5mm) radius on a 3" (76mm) long sheared cut
  • 2" (50mm) Schedule 10 aluminum pipe
  • Four split legs form a self-supporting base anchor
  • 3¼" (83mm) diameter series 6000 aluminum cap has a domed (convex) surface attached to the pipe with an aluminum rivet
  • A permanent ceramic magnet is affixed to the underside of the cap
  • Pipe, cap and rivet are metallurgically matched

 A1NB30 Survey Monument Installation Instructions


A = 3 1/4" (83 mm)
B = 2 3/8" (60 mm)
C = 30" (762 mm)
(Other lengths available)


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Berntsen International, Inc.
  • 1-800-518-0934
  • All other countries:
  • +1-608-249-8549
  • PO Box 8670
  • Madison, WI 53708-8670
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