SOLUSTRE Resistance Box Variable Ohm Resistor Educational Instrument Plastic Material Safe for Boys and Girls

Package Include 1 x Variable Resistance Box Characteristics -Color: Black resistor decade box. -Material: Plastic resistance decade substitution box. -Size: About 14.00X10.00X5.00cm/5.50X3.93X1.97in variable decade resistor resistance box. - The simple design will ensure its high performance as excellent electricity experiment instrument varaible resistor box. - It is lightweight, easy and convenient to carry and store when not in use without any effort resistor set. - This product is suitable for electrical measurement and other experiments in schools and scientific research institutions ohm resistor. - The variable resistance box is simple and easy to use, bring much convenience to you resistance decade box. - It is made of plastic material, and safe, excellent and simple, serving for long time variable ohm resistor.Goods Descriptionohm resistance box Are you looking for professional electricity experiment variable resistance box? , ! Our professional electricity experiment variable resistance box must meet your needs.ohm resistor variblew It is one of for you

• Resistor:the variable resistance box is simple and easy to use, bring much convenience to you,resistance substitution decade box
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• Ohm resistance box:the resistance is stable and reliable when the resistance box is properly used to rotate each group of knobs,resistor bank tool
• Variable resistor box:simple in structure, easy to use, simple appearance design, you can use it with confidence,variable ohm resistor
• Resistance substitution box:and , the simple resistance box is used as an additional resistance to expand the range of the voltmeter,electronic test resistance decade box checker