US$ 55.99
Closed ring design provides continuous support on this plated mild steel retort ring
Rolled-rim parallel-sided copper calorimeter at 4 inches tall by 2
5cm coil diameter on a 5cm closed-length helix
Battery-free analog mechanical stopwatch reading to one-tenth of a second
both striking the ground together
3D Plant Cell Division (Meiosis) Model, 24 x 18", Hand-Painted Size_Small Closed ring design provides continuousThree dimensional plant meiosis model traces chromosome pairing, crossing over, and reduction division through successive hand painted stages on a mounted base.
US$ 55.99
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US$ 450.00
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