Dixon High Heat Metal Marking Crayon Surveying & Mapping/Measuring Tapes & Wheels/Measuring Wheels ID's will be displayed on

ID's will be displayed on the H2S monitor/detector screen in segments of 3 digits at a time (first 3 digits

and 21-E electrode

concrete floor) must be free of metal in order not to interfere with electromagnetic field of the search head

Resistant to underground elements

Will not damage saws or veneer knives

Dixon High Heat Metal Marking Crayon Surveying & Mapping/Measuring Tapes & Wheels/Measuring Wheels ID's will be displayed onThese great and versatile Dixon High Heat Metal Marking Crayons are used on cold metal prior to heating. The Dixon High Heat Metal Marking Crayon's markings are legible at temperatures of up to 1200 degrees F. Fumes from the Dixon High Heat Metal Marking Crayon are non toxic and have very low spattering. Dixon High Heat Metal Marking Crayon Hex shaped 4 1 2" x 7 16" Dixon High Heat Metal Marking Crayons are packed 72 sticks to a box. Made in the U. S.