"C" is for "cemented over" |
Most underground liquid storage tanks have been moved above ground due to many considerations. Their fill pipes are often left in ground and serve as vivid reminders of what once was.
FUEL-OIL fill pipe |
The eleven o'clock side of this FUEL-OIL fill pipe makes good use of a vertically stretched sans serif font to provide legibility. At five o'clock is the barely legible "-35" portion of what could be a part or type number for this fill cap.