DGX Line Arrow

In Stock
Our generic polystyrene line arrows are available in four colors (five if you count black) and approximately (2.6 in | 6.6 cm} long by {1.6 in | 4.1 cm} wide at base

DGX Line Arrow

Line Arrow Color Options
Line Arrow Color Options Dimensions are Approximate Size Comparison
  • Approximately (2.6 in | 6.6 cm} long by {1.6 in | 4.1 cm} wide at base
  • Approximately {0.10 in | 2.5 mm} thick
  • Available in White, Yellow, Orange, Glow-In-The-Dark and Black
  • If you order Black Line Arrows, please tell us why...

Line Arrows are isosceles triangle shaped directional markers providing both a tactile and visual reference to indicate the path to the closest exit.

Dry cavers were using directional markers long before there were any cave divers. The early cave divers in Florida saw the benefit of these markers, and Lewis Holzendorf came up with the idea of folding a triangle of tape around the line to form an arrow. These tape arrows were called "Dorf" markers, in Lewis' honor. There were a couple of problems with tape arrows, however -- they slid along the line and were difficult to feel in a silt-out. Cave diving pioneer, Sheck Exley asked fellow diver, Forrest Wilson to lead a discussion group at a NSS workshop, to come up with an idea for a better arrow. Several ideas were tossed around and eventually, Forrest came up with the current design. They soon became very popular and Steve Hudson of PMI cave rope company asked Forrest's permission to mass produce the arrows for Dive Rite.

More Information
Brand DGX
SKU DX-10910X
Weight 0.010000

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Verified Buyer
Apr 2, 2020
Dive gear express shipped my products in a timely and efficient manner. I am very pleased with my entire order, which included spools, bolt snaps, line arrows, and more. I would gladly shop here again!
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Verified Buyer
Oct 28, 2018
They are our favorite arrows
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Verified Buyer
Good again
Oct 3, 2018
Everything was advertised and delivered in short order, as with several other previous orders. My go to place for tech gear.
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Verified Buyer
Line arrows
Jun 6, 2017
They are standard line arrows. Very good price and with free shipping over a certain amount this is the best place to buy them. If you need line arrows or other line markers this is the cheapest place to buy them.
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Verified Buyer
May 22, 2017
Quick, complete delivery.
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Line Markers

Example of line wrapped on marker

Line markers are used to provide information to divers following a distance line (aka guide line, penetration line, cave line) in overhead environments such as caves and wrecks. Markers are often personalized by the diver and sometimes further individualized with unique tactile modifications. They are attached to the guideline by pushing the continuous line into opposing slots on the marker. To securely fasten the marker, a wrap of the line must be added to the base of each slot as illustrated to prevent the marker from sliding along the line or falling off.

  • Line Arrows are isosceles triangle shaped directional markers providing both a tactile and visual reference to indicate the path to the closest exit.
  • Line Cookies are circular disk shaped non-directional markers to denote a specific location or circumstance on the line. They are often used to mark reference points, intersections, line gaps (i.e. jumps), or the presence of a diver on the line.
  • Line Squares, also called referencing exit markers (REM), are rectangular shaped hybrid markers with a square area at the end opposite the slots to serve as a personal navigation tool but should be considered non-directional for anyone other than the diver placing the marker.

The usage of line markers may differ between localities, teams and individual divers because best practice recommendations have changed over time. The protocols for placement and removal are an important part of cave and wreck dive training, along with knowledge of local practices, because incorrect usage and misinterpretation of line markers are known to cause dangerous confusion and believed to be factors contributing to fatalities.