50ft IDEAL Depth Gauge for blasthole depth measuring.
Product description: The fiberglass depth gauge has a protective poly-coating over the printed feet and inch graduations for maximum protection against wear. Attached to one end is a plastic handle for grasping and on the opposite end is a clip for different size weights, with print on both sides.
These are convenient for measuring the depth of a drill hole. Attach a weight to ensure you get accurate readings, or a water weight to determine the depth of water or emulsions loaded into the blast hole.