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  • D Cell Battery Holder with leads Quick View
  • D Cell Battery Holder/Joiner Quick View
  • DC Generator Quick View
    • DC Generator Quick View

    • DC Generator

    • This handheld D.C generator is an excellent alternative to more expensive models. It is an ideal tool for demonstrating this transformation of mechanical energy into electrical energy. This unit produces a terminal voltage of 6.3V and a maximum current output of 1.2A. Comes with two 15" leads. Ages 7+
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  • DC Motor Kit Quick View
    • DC Motor Kit Quick View

    • DC Motor Kit

    • A simple kit for students to gain insight into field poles, armatures and switches, Kit includes one mounting base, field pole, armature, two wire brushes, a piece of copper wire, two shaft supports, a AA battery holder, AA battery, and 4 each of screws and nuts. With assembly instructions.
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  • Decade Resistance Box Quick View
    • Decade Resistance Box Quick View

    • Decade Resistance Box

    • Consists of six rotary switches in decade sequence mounted on a metal panel with each value clearly marked. From 0 to 1, 111, 110 x 1 ohm, Accuracy within + 0.5% Two universal binding posts are provided for easy connection.
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  • Deflagrating Spoon Quick View
  • Deluxe Slide Making Kit-Glass Quick View
    • Deluxe Slide Making Kit-Glass Quick View

    • Deluxe Slide Making Kit-Glass

    • Are you ready to create your own slides? Make slides of what interests YOU! Learn slide-making techniques as you discover what there is to see on a “micro” level. Remember the slides in this kit are Glass, so be careful. Kit Includes 12 glass slides, 12 glass coverslips, 3 glass slides with single concavity, 1 storage case, 4 Petri dishes…
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  • Deluxe Slide Making Kit-Plastic Quick View
    • Deluxe Slide Making Kit-Plastic Quick View

    • Deluxe Slide Making Kit-Plastic

    • Are you ready to create your own slides? Make slides of what interests YOU! Learn slide-making techniques as you discover what there is to see on a “micro” level. Remember 3 slides in this kit are Glass, so be careful. Kit Includes 12 plastic slides, 12 plastic cover slips, 3 glass slides with single concavity, 1 storage case, 4 Petri…
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  • Demonstration Diffraction 3 in One Quick View
    • Demonstration Diffraction 3 in One Quick View

    • Demonstration Diffraction 3 in One

    • For demonstrating the principle of diffraction grating and the way in which its properties are dependent upon the number of lines per unit length. Comprises a card mount 90 x 40 mm approximately with three 16 x 9 mm apertures, each containing a diffraction grating replica. The gratings are 100 lines / mm. 300 lines / mm and 600 lines…
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  • Demonstration Meter Quick View
    • Demonstration Meter Quick View

    • Demonstration Meter

    • With interchangeable scales. A versatile instrument and demonstration meter that can be converted to an A.C., or D. C. voltmeter or ammeter with the selection of various ranges for each mode. With a high-quality moving coil, spring-controlled movement with full-scale deflection of 5 mA or 100 mV D. C. The long pointer has a spade end and is visible from…
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  • Density Ball Quick View
    • Density Ball Quick View
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    • Density Ball

    • Demonstrates the effect of temperature on the density of a liquid. Consists of a 3" stainless steel hollow sphere weighted so it will float when placed in cool water (15° C) and sink in warm water (30° C). Instructions include 3 experiments.
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  • Density Identification Set, Set of 12 Quick View