Combination hook code 200g/50G hook code physical experiment mechanics lever experimental equipment metal hook code 5.0726 sold.46,081 so'm
Experimental screw lamp holder screw copper accessories experimental lamp holder circuit series parallel experimental physical experimental equipment 4.92,780 sold.8,464 so'm
Light reflection refraction demonstrator foldable total reflection new physical optics teaching instrument with battery box 4.2391 sold.141,062 so'm
Children's dentition children's oral tooth model teaching dental model kindergarten toy practice brushing teaching 5.076 sold.44,670 so'm
Shanghai Pirani Vacuum Gauge Digital Pirani Vacuum Sensor Pirani Vacuum Gauge Measuring Instrument 5.071 sold.1,288,209 so'm
16025 handheld wind direction anemometer light wind meter portable wind Cup type anemometer teaching anemometer 5.0147 sold.178,679 so'm
Electronic analytical balance semi-micro balance laboratory 0.01mg analytical balance 0.09 sold.14,669,650 so'm
Manufacturer in stock 15026 six-position resistance box Electrical Experiment instrument 999999 Ohm 6-speed adjustable 5.017 sold.329,145 so'm
Salinometer seawater culture salt meter hydrometer density meter aquarium fish salt meter salt meter Salinometer 0.094 sold.42,319 so'm
Bomer density meter cool skin surface slurry stone sulfur mixture mud density thick thin Bomei meter factory outlet 5.0197 sold.6,583 so'm
Electromagnetic Oscillation Demonstrator 24061 Senior high school Teaching Experimental Instrument Electrical School Science Student Physics Factory 0.04 sold.728,820 so'm
24010 original secondary coil teaching instrument junior high school physics laboratory equipment teaching instrument for students 0.09 sold.56,425 so'm
Natural marble limestone calcium carbonate 500g block granular chemical laboratory for the preparation of carbon dioxide 4.0119 sold.37,617 so'm
Three-ball instrument solar eclipse total eclipse principle Sun, Earth, Moon astronomical fun popular science instrument Chinese English version direct supply 5.01,287 sold.235,103 so'm
Supply Zhenghua vacuum gauge ZJ-10 ionization vacuum gauge 15.5 high vacuum hot cathode glass gauge 5.05 sold.47,021 so'm
Optical Experiment box junior high school science experiment equipment triangular prism convex lens concave mirror suit 5.0228 sold.300,932 so'm
Ruibao ZJ-52T resistance regulation vacuum regulation ZJ-52 KF16 CF16 interface 15.5 glass metal 5.068 sold.423,186 so'm
Plastic test tube rack 19-hole dropper rack funnel rack laboratory plastic teaching instrument experimental instrument 0.02 sold.42,319 so'm
Celestial body running instrument English solar system demonstration instrument Sun Earth Golden Wood water fire Earth Sea King Uranus 5.017 sold.517,227 so'm
500g-0.001g Laboratory Electronic Balance JM-B5003 Analytical Balance Gold Jewelry Scale Chemical Scale 3.0152 sold.658,289 so'm
Motor principle narrator demonstrator 24020 electromagnetic demonstration motor structure model physical teaching instrument 0.05 sold.775,840 so'm
Wooden ruler 1 meter wooden ruler 1 meter scale measuring tool elementary school mathematics science ruler 0.0138 sold.14,107 so'm
Glass sugar meter 0-25 beer meter sugar meter density meter brewed wine sugar meter gravity meter 0.00 sold.16,411 so'm
16024 light wind meter wind direction anemometer experimental equipment teaching instrument light wind meter 5.0116 sold.681,799 so'm
The friction force of the inclined board trolley demonstrates the physical mechanics experimental teaching instrument of solid wood adjustable slope. 5.077 sold.86,989 so'm
Diesel Engine Model 31009 Physical Model Junior High School and High School Teaching Instrument Experimental Equipment 0.03 sold.206,891 so'm
Manual AC/DC generator bulb generator model power supply teaching physical electromagnetism experiment 5.07 sold.517,227 so'm
Sedimentary rock specimens 15 kinds of rocks three types of rock layered structure geography and geology teaching aids 5.016 sold.188,083 so'm
Biological teaching instrument plant model potato flower model all kinds of flower model factory direct sales 5.04 sold.282,124 so'm
33305 chromosome change model assembly in meiosis magnetic 280 * 180mm biological teaching instrument 5.056 sold.103,446 so'm
Periscope periscope assembly material plane mirror light refraction principle Experimental demonstrator scientific equipment 5.015 sold.35,266 so'm
Beichen electronic balance gram scale analysis 1‰ precision 0.001g jewelry 5kg gold small electronic scale 5.012 sold.789,947 so'm
2051 magnifying glass handheld diameter 40mm50mm75mm100mm elementary school science Middle School physics experiment 5.015 sold.7,054 so'm
Factory Direct sales DF-101S collector type magnetic stirrer magnetic stirrer ultra high temperature stirrer 5.05 sold.1,803,493 so'm
34019 plate structure and surface morphology model junior high school geography teaching instrument primary school teaching aids 5.065 sold.282,124 so'm
Experimental 5000/0.01 Square Plate Electronic Balance Built-in Battery Gold Jewelry Scale Textile Scale 5.08 sold.1,034,454 so'm