Model LM Pipeline Markers by Tinker & Rasor

Ultraviolet-Stabilized High Density Polyethylene (HDPE) to Inhibit Fading and Warping


Tinker & Rasor MARKS-A-Lines are made of ultraviolet-stabilized High Density Polyethylene (HDPE) to inhibit fading and warping from exposure to the elements. And unlike painted metal signs, they will not absorb water, peel, or rust. MARKS-A-Line samples were tested by an independent testing laboratory according to the procedures in Federal (Military) Test Standard 191A, Method 5804,  “Accelerated Severe Weathering Test.” As a result of these tests, Tinker & Rasor offers a limited 25-year warranty on the MARKS-A-Line product line.

Non-Metallic Construction 
The HDPE construction is non-conductive and will not spark when struck. This eliminates the possibility of spark ignition, fire or explosion in hazardous combustible locations.

Wind Resistance
The tubular configuration makes the Tinker & Rasor MARKS-A-Line less susceptible to “windwhip” - a common problem with 2-dimensional metal signs and other flat markers which have a large “footprint” in the wind.

High Visibility
MARKS-A-Line fittings are available in vivid colors selected to stand out in any background environment. Its 3-1/2" OD tubular design is highly visible from any angle as well as from the air. Optional fluorescent fittings increase visibility from any sight plane. Text messages are hot-stamped for durability into the fittings, not screen-printed or stenciled

Virtually No Maintenance
Because MARKS-A-Lines require no maintenance, their purchase assures low cost over the life of the installation.

MARKS-A-Line Main Functions
Indicates the location of a buried pipeline, cable, conduit, etc. Helps construction crews avoid accidentally damaging buried utilities and pipelines. Warns the general public that there is a buried pipeline or utility in the area. Identifies the owner. Test Stations are used to monitor the effectiveness of cathodic protection programs.


  • Impact resistant resin "HDPE"
  • None Metallic
  • UV protection
  • Long life in extreme weather areas
  • Low wind resistance
  • Maintenance free
  • Non-Metallic construction
  • High-Visibility
  • "No Salvage Value"

You Choose:
  • Custom Text
  • Custom Logos
  • Marker Color
  • Text Color
  • 1 or 2 sided Text



* Identification of pipeline or structure
* Identification of Owner
* Assist Construction Crews In Locating Buried Structures
* Conformity to State & Federal ID Regulations


 -76ºC to 122ºC (-105ºF to 252ºF)


 Marker Head: 18" x 3.8" O.D. (457.2mm x 96.5mm) 3.5 O.D. by length requested.