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- Item Size: Base wheel: 4" diameter x .020".
Top wheel: 3" diameter x .020"
- Imprint Area: 7/16" high x 1 1/8" wide above centered eyelet and 3/16" high x 1 1/8" wide below eyelet.
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Made of White Vinyl Plastic.
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Popular Birth Date Calculator, this tool allows a doctor to determine the approximate date for a baby's birth. Shows 1st, 2nd, and 3rd trimester periods.
1 color ink, on base and top wheel, front only.
Accuracy +/- may cause 1-3 day variations.
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