These jumbo sized pulleys are designed for classroom demonstration. The single, double, triple, and quadruple pulleys are all 70 MM in diameter. The pulleys are "open" type-users can run pulley cords through them more easily. Lightweight, low-friction, and deformation-resistant plastic…

Weights are made of brass, with nickel plated surfaces. All weights are carefully tested and calibrated. Analytical Weight Box contains a total of 9 weights from 1 to 100 grams, in polished wooden box, with fractional weights, rider and forceps.

This kit comes with everything you need to start teaching high vacuum in the classroom.  Demonstrate water boiling at room temperature as well as what happens to a balloon at high vacuum plus much more! Vacuum Pump Kit includes: 1 EA Acrylic Pump Plate 1 EA 6"x11"…

This back board mounts directly to the Visual Scientifics base so when students need to take measurements in the vertical direction they have a high contrast grid to collect data from.  The back board is also magnetic to accept different mounting solutions for various experiments and…

4"; Magnetic needle on plastic support with a brass pivot.

Demonstrate the principles of cloud formation even when there isn't a cloud in the sky. When the atmospheric pressure is lowered in the chamber and smoke particles are introduced, a nucleus for the formation of water droplets is produced. When the bulb is compressed and then suddenly releasing, a…

All plastic construction. Dual scale range is 6" or 150mm. Readability is 1/128" or 0.05mm.

Painted Red and supplied with a keeper. Available in 3"; (left photo) or 1"; (right photo)

Glass with ground edges - Double Convex

Magnifying Glass with Glass lenses molded into high quality unibody plastic frames.

Flexible, 18swg stranded wire cord with a stackable banana plug at one end and an alligator clip at the other end. Alligator clip has a protective vinyl sheath.

A simple and useful generator for experiments requiring up to 12 volts DC current. Housed in a tough plastic case with binding posts for electrical connections. Approximate size 6.5" x 2.5 x 4".

The Mechanics System 2 Physics Kit comes with 36 components, including all the tubes and vessels one needs to investigate core concepts in introductory fluid mechanics. With this kit students can explore common experiments such as Boyle’s Law, The Cartesian Diver, and Bernoulli’s…

These uncalibrated specific gravity bottles are excellent for determining the specific gravity of liquids. The borosilicate bottles have a ground stopper joint for a precision fit. Available in 10 ML or 25 ML sizes.

Explore "green energy" on a small scale. This solar car operates on sunlight or a rechargeable "AA" battery. A four-position switch allows you to choose between running the car on the solar cell or battery, recharging the battery from the solar cell, or "off". The car can also operate using a…

Balls sold individually and in a variety of sets. Choose from aluminum, brass, copper, cork, glass, lead, steel, wood, and zinc. Sizes include 19mm and 25mm. Pick from one of the following styles: drilled center hole, solid, and with hooks. Ball sets include: 42003-19: 19mm diameter with…

Featured displays of this electronic alarm stopwatch include time (hours-minutes-seconds, with 12 or 24 hour mode option), calendar, 24-hour stopwatch, alarm, hourly chime, 1/100 second chronograph, split time, and total time. It is lightweight, easy to operate, ad comes complete with battery and…

We offer a variety of economical ceramic bar, disc, and ring shaped magnets. Magnets are upainted, except where noted.

The optical bench set is designed for basic geometric optics experiments, including imaging by lenses and mirrors. The optical elements are mounted in protective frames with mounting rods for easy alignment, and the four captive riders have an index mark and set screws to secure the rider and…

The set contains 6 glass lenses: one each of double convex, plano-convex, concavo-convex, double concave, plano-concave, and convexo-concave. Includes a reusable cardboard storage box.

This simple device gives a graphic demonstration of the sun’s radiative energy. A large convex mirror concentrates solar radiation onto a small container of water suspended at the mirror’s focal point. In a few minutes, the water boils. The mirror’s angle is adjustable though…

This magnifier offers an extra large field of view, hands free use, and folds down to a compact size for storage. Its 10cm lens provides 6x magnification. Ideal for use on a lab table, and for dissecting small specimens like owl pellets.

The Wimhurst Machine is a visual and powerful tool used to create static electrical charge and high voltage sparks. The Leyden jars and disc are made of durable clear acrylic. The upright support and pulleys are plastic and resistant to breakage. Aluminum sheets are mounted to the sides of the…

Excellent model, complete with Teacher Activity Guide which demonstrates LaPlace's law (also Flemings Left Hand Rule) What it shows is that a conducting material with electricity going though it is surrounded by a magnetic field and if placed in a magnetic field it'll result in a moving force.

The classic method for demonstrating and measuring the small force experienced by a conductor carrying an electric current in a magnetic field. One half of the balance is placed inside a solenoid. The other half has an adjustable counterweight and can carry light additional masses. When current is…

The meters are ideal for numerous electrical and laboratory experiments. Full scale and fully enclosed, with accuracy +/- 2.5%, and a 7.5 cm scale length. Color Coded. Supplied with binding posts and external zero-adjustment.

This apparatus allows students to investigate conservation of momentum and kinetic energy change in collisions. It can also be used to compare elastic and inelastic collisions. A flat base supports a curved aluminum track and an adjustable target support. The kit includes 2 steel balls, a glass…

Density Cube Set This set includes three different sized cubes of eight materials commonly used in density experiments. Each material is represented by a 1/2”, 1” and 1-1/2” cube. Materials included are acrylic, aluminum, brass, copper, nylon, polypropylene, PVC, and steel.…

These clear acrylic refraction cells are excellent for showing refraction and internal reflection in water and to measure its refractive index. The cells have uniform wall thickness to eliminate distortions.

Made from plate glass about 2mm thick with highly silvered back.

These Spring Scales come in a clear plastic case, metal pointer, spring, suspension ring, and load hook. Scales are calibrated in Grams, Newtons, or both, with zero adjustment. Other prices are available; call for prices.

This calorimeter consists of two nested aluminum cans separated by a 1.7 CM thick styrofoam liner and a clear molded plastic lid with a filler cap. A plastic insulator ring protects the styrofoam insulation against damage and liquid spills. The inner reservoir has a capacity of 150 ML. A…