Description

and a candle holder

and a motor accessory

and 38mm lens holder - an inexpensive starter platform for image-formation experiments

three interchangeable scales

Wooden Frame Abacus, 2 Steel Wires Subcategory_Microscopes and a candle holderWooden framed abacus with two steel wires of 20 beads each on a 13. 5 by 5 inch base, a beginner level counting tool for preschool and early elementary number introduction.

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Wooden Frame Abacus, 2 Steel Wires Subcategory_Microscopes and a candle holder

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