Penny 1 – Full Coin

This series of data captures a US one cent coin with two different systems, at 3 resolutions:

• Penny-All.os3d, this dataset, shows the entire back of the coin, measured with a Keyence VR-3100 at 12x.
• PennyBack-LincolnAndPillars measured with a Zygo NewView 8300 at 2.75x.
• PennyBack-Lincoln measured with a Zygo NewView 8300 at 10x.

We featured this data in our blog post, How much does it cost to compare measurement systems? because it helps to highlight the difference in lateral resolution and  field of view between various measurement technologies. In the full Penny data (this dataset) , we can just barely make out Abe Lincoln seated between the columns of the Memorial (above). Compare this to the PennyBack-LincolnAndPillars data, taken with Zygo NewView 8300 at 2.75x:

and PennyBack-Lincoln, taken with the NewView at 10x:

For this dataset, removing a plane (Analysis Settings > Geometry/Form > Plane) results in a good representation of the surface.  The circular cropping tool (Analysis Menu > Data Cropping Tool > Crop to Circle/Ellipse) works nicely for  discarding the unwanted edges.

Data source:  Digital Metrology Solutions (www.digitalmetrology.com)