The manufacturer’s covers are made of metal .
The shape of the covers is rectangular , square , or round .

No colored covers were found from this manufacturer; a single golden cover exists on the site .
City emblems do not appear on the manufacturer’s covers.

The cover’s purpose often appears on the covers: water covers include the letters W or SV (sluice valve) , etc.
The word GAS appears on gas covers .
The manufacturing year of the cover usually does not appear.

Standards
Some covers bear the British Kitemark standard and the British BS5834 standard as well .
The European EN124 standard and its associated load classes appear on many covers, with the most common load classes being B125 and D400 .

Typical covers
Most of the manufacturer’s covers feature a background of geometric shapes, mainly polygons or squares .
There are also diagonal covers (square or rectangular ones composed of two triangles, with the opening done by lifting one of the triangles) . There are 23 manhole covers in the site that are made by the Manufacturer
Click for the 23 covers made by Thomas Dudley (Of these, 0 are best covers)