Centripetal force demonstrator aluminum casting turntable metal turntable middle school experimental equipment teaching instrument

Electric three-sphere instrument, total lunar eclipse principle, earth motion instrument, popular science toy, gift, geography experiment equipment

Biological microscope/professional microscope 1000 times 1000x XSP-03 biology middle school teaching instrument

Primary school students power supply 1.5V ~ 9V/1.5A J04002 junior high school physics electrical experimental equipment factory outlet

Centrifugal track centrifugal motion demonstrator Senior high school physics elementary school science roller coaster model mechanics teaching aid instrument

Factory direct biological microscope 640 times 500 times junior high school students/students microscope biological microscope teaching

Three-ball instrument solar eclipse total eclipse principle solar, ground and moon astronomy interesting popular science instrument Chinese version English version direct supply

Centripetal force demonstrator J2130 accessories belt physical instrument physical mechanics experiment demonstration equipment teaching

Biological microscope students use monocular straight tube XSP-200X 200 times teaching equipment factory direct sales

26033 dialysis Laboratory High School chemical separation and purification semi-permeable membrane experimental demonstration instrument teaching instrument

Cylinder volume surface area demonstrator Cylindrical cone volume ratio Understanding cylindrical cone volume teaching aids

Ladder carbon dioxide fire extinguishing principle experimental equipment metal ladder candle holder junior high school chemistry experimental instrument

30001 large geometric shape model cube cuboid equal bottom equal height cylindrical cone quadrangular prism

Magnetic geometric graphics large demonstration adsorption blackboard rectangle square circle triangle parallel

Sundial model technology small production diy material self-made solar clock scientific experimental equipment popular science toys wholesale

Electric hole punch manual drilling machine electric drill chemical laboratory rubber plug drilling teaching instrument

Induced Current Generating by Cutting Magnetic Induction Wire suit Magnetic Electrogeneration Sensitive Galvanometer Square Coil Shoe Magnet

Spiral spring group 0.5/1/2/3/5/10N Hooke's law with spring physics spring instrument mechanics experiment

22016 wave-emitting sink projection physics teaching instrument experimental equipment teaching aids wave-emitting sink

Safety funnel long neck funnel chemical experiment double ball straight funnel glass preparation of carbon dioxide teaching instrument

Portable compass compass lens compass stainless steel metal case compass Chinese English optional

Wholesale Joule's Law Demonstrator J2375 Experiment with Ammeter Initial Senior high school Physics Teaching Experiment Equipment

Series-parallel circuit demonstration board Teaching board Series-parallel circuit demonstrator Teaching instrument Experimental equipment

The specific heat of the object of the calorimeter J22201, the electric heat equivalent, the teaching of the physics experiment, the measurement of the thermal equipment.

Research on the Dissolution and Solidification of Naphthalene Experimental Apparatus Dissolution and Solidification of Crystals Physical Experimental Equipment Teaching Apparatus

Capacitor charging and discharging tester 303804 new curriculum standard Senior high school physics and electricity grouping experimental teaching instrument

Dot paper tape 80cm a bundle of dot timer EDM paper tape 50m long toner paper carbon paper

Glass Newton tube dime tube vacuum pump extractor and physics experiment equipment teaching instrument

Electromagnetic doting timer full set of paper tape-containing carbon paper fixing clip Senior high school physics experimental equipment teaching instrument

Physical acoustics experiment set 440Hz resonant tuning fork a pair of table tennis 512Hz comparative amplitude different music

Molecular Spacing Experimenter J26009 Molecular Gap Demonstrator Motion Demonstrator Junior High School Physical Chemistry

Crude Salt Purification Evaporation Crystallization Filtration Experiment Chemistry Experiment Equipment Primary Senior high school Chemistry Experiment Teaching Instrument

Magnetic Counting Stick Primary School Mathematics First Grade Learning Tools Color Magnetic Counting Stick Children's Kindergarten Counting Stick

Distillation flask 150 250 500ml round bottom flask with branched glass flask distillation device experimental equipment

Plastic Magic Small Square Particles Assembling Building Blocks Assembling Plug-in Block Building Blocks Educational Early Education Children's Toys

Ampere Force Demonstrator Physics Experiment Equipment Physics Instruments Learning Tools Middle School Teaching Instruments