Ovals roller

Tool for building ovals (prolate spheroids) of various sizes (12x6 14x8 16x10 mm).
The recesses on the side measure the volume of polymer clay needed for each oval.

My collection of rollers:

• Sphere roller 6 8 10 12 mm - https://www.thingiverse.com/thing:7263341
• Sphere roller 5 7 9 11 mm - https://www.thingiverse.com/thing:7284435
• Sphere roller (imperial units) - https://www.thingiverse.com/thing:7272582
• Conical beads roller - https://www.thingiverse.com/thing:7293209
• Eggs roller - https://www.thingiverse.com/thing:7305589
• Ovals roller - this thing