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A 48-inch free standing diamond shaped marker
These are white with red vertical stripes and indicate unobstructed water on all sides. They mark mid-channels or fairways and may be passed on either side.
Because it never washes or rubs off.
Double marker test is done by blood test.
type of paintball marker
A vertical open-faced diamond symbol is used to indicate a hazard such as a rock.
An orange diamond is the symbol on a regulatory marker that indicates hazards such as rocks or stumps.
Crossed diamonds indicate areas off-limits to all vessels such as swimming areas, dams, and spillways.*NOTE that an orange diamond with black lettering within the diamond means a danger exists, such as rocks, shoals, stumps, or dams.
A diamond stamp on the inside of your ring may indicate that the ring contains real diamonds. It can also serve as a marker of the quality and authenticity of the diamonds used in the ring. If you are unsure, you may want to have it checked by a professional jeweler.
keep out of that area
A 48-inch free standing diamond shaped marker
Crossed diamonds indicate areas off-limits to all vessels such as swimming areas, dams, and spillways.*NOTE that an orange diamond with black lettering within the diamond means a danger exists, such as rocks, shoals, stumps, or dams.
This is a non-lateral marker. It can indicate a controlled area, such as no wake. It can be an informational marker, a "keep out" marker, or a warning marker (Dam, Rock, etc)
keep out of that area
Hazard
dontknow...
An orange diamond is the symbol on a regulatory marker that indicates hazards such as rocks or stumps.