A question of Scale

A question of Scale

Observation - A question of Scale. Description: The Rotund Disk snail is tiny by most standards but 4.8mm may have little meaning when set against the Common Chrysalis or perhaps the Common Garden snails - a snail is a snail to most people. Adding scale brings size into focus. I prefer 20p (see other

The Rotund Disk snail is tiny by most standards but 4.8mm may have little meaning when set against the Common Chrysalis or perhaps the Common Garden snails - a snail is a snail to most people.
Adding scale brings size into focus.
I prefer 20p (see other observations), the ruler is more correct but goodness, I wish we were still using the >>'Thrup'ny Bit<<! Anyone remember?
Well, now watch out for the new £1 coin.
Three sorts of snails are seen here - only one is Discus rotundatus http://www.naturespot.org.uk/species/rounded-snail.
Edit - added two pictures
Picture 5 shows a glory of gold - 1888 is 4mm
Picture 6 show the light grey animal
EDIT - added a Tag, sorry

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