Two identical sized screw cap metal cans (one smooth metal and other painted dull black) to demonstrate the difference in cooling rates of hot water inside the cans due to different surfaces.  The difference in the cooling rates is attributed to the thermal radiation emitted by the two cans. …

This clear plastic 12" ruler is scaled in 1/16" increments on one side and MM on the other.

Slotted weight set with hanger & case, brass. Includes 1x50g, 9x20g, 1x10g, 2x5g, hanger

Durable, liquid-filled clear magnetic compass is housed in a black plastic rotatable bezel. Graduated in 5° increments. Outer diameter of bezel is 45mm. Outer diameter of clear compass is 35mm. Includes a lanyard.

Ammeters are used to measure the current flowing through a circuit. Current is measured in amperes, which is denoted by A on our meters. Our meters are accurate to +/- 2.5% and have banana jack style binding posts. This AC/DC ammeter can measure a range of 0A to 3A.

Durable, lightweight plastic instruments, designed for whiteboards/chalkboards. Triangles, protractor, and ruler are made of white polystyrene and feature handles for ease of use. Compass is made of clear acrylic, and accomodates most dry erase and magic markers. Triangle, 45 degree, 23" base, 16" sides.

Economical stainless steel Vernier calipers with 125mm/5 inch capacity. Features inside and outside jaws, full length depth gauge, friction ruler and sliding lock for gauging. Graduated in millimeters and 1/16".

Mounted on a plastic base; comes with a ring for easy hanging. Overall diameter is 7.5". Shipping weight is 1.4 lbs.

Deluxe slotted weight set with rack, 8 weights, brass. Includes 1x500g, 2x200g, 1x100g, 1x50g, 2x20g, 1x10g, rack. Deluxe slotted weight set with rack, 10 weights. Deluxe slotted weight set with rack, 12 weights, brass/aluminum. Includes 1x500g, 2x200g, 1x100g, 1x50g, 20g, 1x10g, 1x5g,…

Set of five zinc-plated hexagonal masses supplied in a sturdy cardboard box. Includes one each of 100g, 500g, and 1000g, and two each of 200g masses.

Hardwood half meter stick for use with our Demonstration Balance Support or other laboratory measurement activities.

United's series of STEM based curriculum kits accent the scientific method and independent inquiry featuring hands-on learning materials and exciting interactive digital content that can be accessed on a computer, tablet or your mobile device. Kits contain structured, guided, and open…

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

Includes a variety of tools, and objects for teaching basics of measurement. Kit is shipped in a reusable storage box. Kit includes Activity Guide with 15 activities.

Sturdy economical scale for general use in the lab. It features a round plastic weighing platform. Capacity is 5 kg, or 11 lbs.

This precision measuring tool is made of hardened steel for precision and durability. It has a range of 150 MM and a large, easy-to-read dial with a resolution of 0.02 MM. A storage case and instructions are included. Shipping weight: 6.5 Oz. dimensions: 9" x 0.75" x 0.25".

This versatile tape measure is perfect for a wide variety of applications. The bright yellow steel tape retracts with a simple push of a button. It also features a high impact plastic case with a belt clip and loop handle. The tape is marked in both English and metric.

21st century New York Balance is ideal for demonstrating basic physics principles including levers and center of gravity. Set includes a demonstration balance support, three knife edge lever clamps, a half meter stick, one 50g hooked weight, and one 100g hooked weight. Includes activity guide.

Micrometers are a preferred tool for measurement of the outside thickness of items such as metals. This tool is useful for machinists and anyone needing precise measurements. It can be used to measure glass tubing or other outside diameters in a lab environment. It is a perfect teaching aid in…

Use this convenient set to perform various pulley demonstrations. The durable 20cm x 15cm base is fitted with a capstan and a 61cm tall aluminum support rod. Also includes a 20cm crossbar with clamp.  Includes activity guide. Contents Wooden base with capstan, hook and rod…

This high quality set of 12 drilled balls is great for conducting all of your pendulum experiments.  Each set contains 2 each of brass, aluminum, steel, wood, cork, and copper balls. A 3mm hole is drilled through the center of each ball. Every set comes in a convenient plastic storage…

These weight sets include accurate, non-rolling hexagonal masses made of steel, and feature a durable black oxidized finish. Sets are supplied in sturdy cardboard boxes. Metric Weight Set includes two each of 5g, 10g, 20g, 50g, and 200g masses,

Glass thermometer with red Toluene solution is mounted on a plastic backing card. Range is -40° to +50°C .

A fine instrument for determining the radius of curvature of spherical surfaces such as mirrors and lenses. Its micrometer screw is graduated to measure displacement as small as 0.01mm. The instrument has two brass plates and three steel legs. A flat glass plate is provided for support while…

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…

These weights feature flat countersunk bottoms, with a double-ended hooked rod through the middle. They can be used on balance pans, as well as hooked in tandem for lever arm studies. Set of 9 weights consisting of 1 each 10g, 50g, 500g, 1000g, and 2 each 20g, 200gram weights. Weights are made of…

The timer with photogates can be used in multiple ways in your physics science experiments. The time has functions for timing, mechanical periods of oscillation, acceleration, collision velocities, counting and more. A pair of photogates are included in the kit.

This set of four activities investigates how light is used in technology products. Each activity has deep content and unique materials so users can explore science concepts using STEM methodology. Pack Sets, designed for use by an entire class, include 10 sets of hands-on materials for one activity…

Set of 6 hooked aluminum masses with a plastic storage base.

Easily determine the height of an object by using angles. This clinometer has a spring-loaded trigger that holds a pivoting arm stationary to indicate the angle above or below the horizon. The maximum angle above or below the horizon is 70°. This can be used for measuring the height…

The Spark Timer is a recording device used to measure the velocity and acceleration of a falling or moving object. It sparks at uniform intervals, leaving marks on a paper tape. The distance between the marks on the tape are used to calculate velocity and acceleration. It is provided with a roll of…

Voltmeters measure the potential difference, or voltage, between two points in a circuit. Measurements are denoted by V. Our meters are accurate to +/- 2.5% and have banana jack style binding posts. This DC voltmeter can measure a dual range of -1 to 3, -5 to 15V.