How to buy or make a ruling device to show depth of potholes or utility cover-lids, while photographing? Can manage if one person holding a rule, and the other person focusing a camera to take a close-up showing the measurement. But cannot do on my own with current tools.
I carry a tape measure and flat edge (clipboard) to measure some cycling hazards I see while cycling. But there are times when one wants to photograph to persuade the authority to fix, or proof if the hazard is a dangerous work practice.
Examples include work at an SA Water cover-lid where the cover-lid was left more than 20mm below the road surface, surrounded by a much deeper and large hole. This was in a turn right lane which a cyclist might enter, and downhill! I reported it twice but it was months before remedied. An example last week was of gas company workers cutting four holes in a bicycle lane, all outside the Austroads limits, the deepest one 55mm deep.
Might be easier to persuade some authorities to improve their standards or enforcement of them, if photographic evidence.