| 摘要 |
Embodiments of a depth gauge comprise a housing, a support structure extending from the bottom of the housing and being configured to balance the depth gauge on uneven or even surfaces, a retractable surface engaging member extending through the bottom of the housing and comprising a lower point configured to detect dents on a surface, and a gauge display coupled to the surface engaging member and operable to output depth measurements of dents detected by the surface engaging member.
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