Mobile Phone Universal Clip-on Microscope Mobile Phone Magnifying Glass Teaching Aids Microscope Magnifier Huihuay 30X Magnifying Glass for Phone Clip-On Microscope Magnifier - VERIMP VERIMP

• 30 time- mobile phone magnifying glass, this magnifying glass must be viewed with the mobile phone and cannot be used alone. For most mobile phones, the thickness of the phone should not exceed 12mm. The camera should not exceed 22mm. The magnifying glass is small and convenient, can be carried at any for time-, and has a sponge- at the position of the bayonet- to prevent wear and tear on the mobile phone. Microscope for head only, other accessories demo- in the picture is not included! Stylish and luxurious: each magnifying glass is a beautiful work of art. Crafted with sophisticated design and anti-fall frame slots. We pay attention to every detail!
• * This product provides DC power supply for physics and chemistry. It is also an independent electronic rectifier device. It has stable performance, reasonable adjustable gear, low ripple voltage, strong anti-interference ability, and adds current limiting venting and high-voltage overload automatic disconnection. Protective device, extremely convenient and reliable to use * Before use, you should be familiar with the functions of the switches and binding posts on the panel. connect the power plug to the AC 220V, 50Hz power supply, turn on the power switch, and the indicator light is on, indicating that the whole machine can work. * DC high voltage output: Connect the load to the terminal marked "DC output" on the panel and turn the voltage adjustment knob to the required voltage position, and pay attention to the positive and negative poles not to be connected wrongly * When the output is overloaded or short-circuited, the overload indicator is on, the output is automatically cut off, and the output part is automatically protected. After troubleshooting, turn on the power switch again to resume normal operation. * When the instrument is not in use, the power plug should be unplugged.
• Precision-made parts made of standard galvanized iron, rust-proof, anti-corrosion, durable, brand new, high quality. The pliers are mainly used to process strong materials at high temperatures. They are economical and practical jewelry making tools and necessary tools for chemical experiment equipment. You can also use pliers to pick up the flask, beaker and test in the lab,easy to carry, easy to use, economical and practical jewelry. Precisely manufactured parts are flattened and the large finger opening helps to grasp and control the pliers. Note:After the experiment is completed, the pliers should be wiped clean, put into the experimental cabinet, and kept dry.
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• * Five kinds of coil springs made of steel wire are grouped together. The tension limits are 5N, 3N, 2N, IN, 0.5N. * Nickel-plated surface protection. The upper end of the spring is a ring, and the lower end is composed of a triangular piece, a hook and a pointer. * The red paint at the corner of the triangle is the effective working number of the spring. Within the elastic limit, the length of the spring extension is proportional to the external force. * Within the working limit load, the non-linear tolerance of the spring stiffness at each point relative to the average stiffness is not more than 5%. * Used for middle school physics teaching experiment.