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

These drilled balls are excellent for use as pendulum bobs or in impact and collision experiments. All drilled balls feature 3mm countersunk holes so pendulum cord knots can be recessed.

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".

Designed for beginners as well as experienced navigators, this sextant features an adjustable index mirror, index, and horizon shades. Durable brass construction, and features like more expensive models make this a great value Weighs only 0.75 lbs. An instruction sheet is included.

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.

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.

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 spring scale can be used to measure forces using push or pull functions, or to weigh a suspended object from the large hook. Includes a zero adjustment screw and a metal suspension ring. Available in six color-coded sizes.

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. …

Individually calibrated weights made of high quality stainless steel. Both sets come with a sturdy plastic storage block. Set of 9 includes 1 each of 5g, 10g, 50g, 100g, and 500g, plus 2 each of 20g and 200g weights. Set of 10 includes all of the previously mentions, plus 1 each 1000g weight.

Demonstrate Torricelli’s theorem to show the relationship between water pressure and depth. This clear acrylic cylinder, 19-5/16” high, includes three vertically aligned spouting nozzles positioned 4-3/4” apart. Each spouting nozzle also includes a stopper so pressure at each…

These foam calorimeter cups have excellent insulating properties so you can investigate thermal energy with minimal loss to the environment. The lids have holes for inserting a thermometer or temperature probe. Outside Dimensions Height: 4.25” Diameter: 4” Inner container: Height: 4” Diameter 4”…

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.

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.

Demonstrate how two identically sized cans absorb and radiate energy differently. One of the screw cap cans is smooth metal and the other is painted dull black. Water cools or heats at different rates because of the thermal radiation emitted by the two

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 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…

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,…

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…