iGAGING DIGITAL PRECISION DEPTH GAUGE SET The iGaging Digital Precision Depth Gauge is a versatile precision instrument designed to measure depths in tight spots and up to 22 inches deep. It features a super high-precision electronic indicator with a resolution of 0.0005 inches, providing accurate measurements in inch, metric, and fractional units. The gauge includes six extension rods (1", 2", 3", 4", 5", and 6") and four feeler points, allowing for customizable measurement lengths. The indicator gauge conforms to AGD standards and federal accuracy specifications, ensuring reliable performance. Additionally, the indicator can be mounted on the center or Mfg: Igaging