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Old 06-11-2021, 04:20 PM   #11 (permalink)
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cast iron key for small manhole ( water meter )cover removal

The small 'T' in inserted into the slot on the cover, cover is rotated to disengage dogs, then the cover can be safely lifted and removed without dropping.
Water meters can be read. Water shutoff valves can be accessed. Keeps kids like me out.

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MetroMPG (06-11-2021)