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8 products

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Tuning Fork
Tuning Fork
11745

Made of brushed aluminum. Gives a fixed tone when struck. Key: C. Frequency: 512.
Made of brushed aluminum. Gives a fixed tone when struck. Key: C. Frequency: 512.

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$3.95 Each
Wave Demonstrator Spring (Flat Coiled) - 3" x 4"
Wave Demonstrator Spring (Flat Coiled) - 3" x 4"
14775

Spring measures 3" x 4". Can be extended many times its length without distortion.
Spring measures 3" x 4". Can be extended many times its length without distortion.

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$4.95 Each
Tuning Fork Boxed Set of 8
Tuning Fork Boxed Set of 8
14770

Comes with wooden box with foam lining. Each tuning fork has a specific place in the foam lining die-cut for easy storage. Each set also contains a mallet specially designed with one hard and one soft end, for use with all frequencies of forks. Tuning Fork set of 8. With mallet. In wooden box. Contains one each of 256, 288, 320, 341.3, 384, 426.6, 480, and 512
Comes with wooden box with foam lining. Each tuning fork has a specific place in the foam lining die-cut for easy storage. Each set also contains a mallet specially designed with one hard and one soft end, for use with all frequencies of forks. Tuning Fork set of 8. With mallet. In wooden box. Contains one each of 256, 288, 320, 341.3, 384, 426.6, 480, and 512

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$36.95 Set
Ripple Tank for Overhead Projector
Ripple Tank for Overhead Projector
15925

Heavy Plexiglas construction. For use with an overhead projector or on the table top. Great for observing propagation, reflection, interference and diffraction of waves. Comes complete with adjustable vibrator, water tank, 2 baffles and adjustable control knob. Needs 1 D Cell battery ( not included ). Dimensions 288 mm x 3300mm x 38 mm. Width x Length x Height.
Heavy Plexiglas construction. For use with an overhead projector or on the table top. Great for observing propagation, reflection, interference and diffraction of waves. Comes complete with adjustable vibrator, water tank, 2 baffles and adjustable control knob. Needs 1 D Cell battery ( not included ). Dimensions 288 mm x 3300mm x 38 mm. Width x Length x Height.

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$97.95 Each
Wave Model Demonstrator
Wave Model Demonstrator
16867

For demonstrating longitudinal and transverse wave motion. Consisting of a number of eccentric plastic discs supporting a series of plastic rods, joined to a handle. On turning the handle, simulation of waves can be obtained on the rods. 18"L x 4"W x 12"T. Weighs 8 lbs.
For demonstrating longitudinal and transverse wave motion. Consisting of a number of eccentric plastic discs supporting a series of plastic rods, joined to a handle. On turning the handle, simulation of waves can be obtained on the rods. 18"L x 4"W x 12"T. Weighs 8 lbs.

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$46.75 Each
Wave Demonstrator Set
Wave Demonstrator Set
14773

Set includes two helical springs and a length of cotton string. The long narrow spring measures 3/4" x 72", and can be extended to 5 meters. Larger spring measures 3" x 4". Can be extended many times its length without distortion. Includes activity guide. Shipping weight: 2.5 lbs.
Set includes two helical springs and a length of cotton string. The long narrow spring measures 3/4" x 72", and can be extended to 5 meters. Larger spring measures 3" x 4". Can be extended many times its length without distortion. Includes activity guide. Shipping weight: 2.5 lbs.

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$19.25 Each
Wave Model
Wave Model
14595

For demonstrating longitudinal and transverse wave motion. Consists of a number of eccentric aluminum discs supporting a series of metal rods, joined to a handle. On revolving the handle, simulation of waves can be obtained on the rods running in a metal guide. Mounted on a nicely polished wooden case.
For demonstrating longitudinal and transverse wave motion. Consists of a number of eccentric aluminum discs supporting a series of metal rods, joined to a handle. On revolving the handle, simulation of waves can be obtained on the rods running in a metal guide. Mounted on a nicely polished wooden case.

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$92.95 Each
Made in the USA
SlinkySlinky
Slinky
13453

• For 70 years, made in the U.S.A. with over 300 million sold worldwide
• Stretches like an accordion, bounces and walks down steps
• Made of metal for long lasting wiggly jiggly fun
• Comes boxed and perfect for presents, party favors, Easter baskets, grab bags, prizes and stocking stuffers
• Recommended for children 5 years of age and older


For 70 years, made in the U.S.A. with over 300 million sold worldwide. Stretches like an accordion, bounces and walks down steps. Made of metal for long lasting wiggly jiggly fun. Comes boxed and perfect for presents, party favors, Easter baskets, grab bags, prizes and stocking stuffers. Recommended for children 5 years of age and older

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$5.50 Each