Cylindrical Lens

PIRA 6A65.56

Image:

Description:

Only 'LEAD' will appear to be inverted when viewed through a cylindrical lens. Why?

Recipe and
Location:

Section G
Section G

Video:

Streaming Video:

None

Notes:

OXIDE has a line of symmetry horizontally, down the middle...thus it looks the same when inverted. A font that exhibits this symmetry MUST be used.