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Spring Balance Cylinder Shape
Teaches children the shapes and the sequence of the 28 Arabic alphabet characters
Precise Digital Voltmeter + Instruction Manual+ Battery included
Brass Ball Diameter 2
Knitted Wrist with Overlock
Pack of 10 Expendable Steel Springs Porcelainware Spring Balance Cylinder ShapeIncluded: Pack of 10 Expendable Steel Springs. Coils open at 20g load and extend to approximately 60mm at 100g load. Max. extension without permanent deformation is approximately 150mm. Diameter: 16mm, Length: 20mm, overall closed length including end loops 50mm Designed for use in professional laboratories but is an ideal choice for science classrooms and household use. If you need custom order with different sizes design, please contact us. Safely
US$ 40.99
US$ 24.99
US$ 24.99
