Clear Plastic Rulers Pk Of 12.
These 15 cm (6") long rulers are inexpensive and ideal for students in the laboratory. Because they are clear, they can be held over an organism for easy measuring.
Packs of 12.
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These 15 cm (6") long rulers are inexpensive and ideal for students in the laboratory. Because they are clear, they can be held over an organism for easy measuring.
Packs of 12.
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