High precision interferometer with interchangeable optics for Michelson or Fabry-Perot setups. 200 MM precision geared lead screw for fine adjustment. This product has a 90 day lead time. Market standard for this type of product.

These support stands feature a heavy cast iron base with black enamel finish. Each base includes a removable zinc plated rod.

Clamp features vinyl coated three pronged jaws that open to 2.25" wide. Includes fiberglass sleeves and a clamp holder that can be rotated 360°.

Five pounds of black wax for dissecting trays.

This micrometer is made of hardened steel for precision and durability. Its range is 0-25 MM and it has a precision rotary scale with a resolution of 0.01 MM, a ratchet thimble, and a locking lever. Instructions are included. Shipping weight: 9.5 Oz., dimensions: 6" x 4" x 1.5".

Excellent tool for demonstrating the principle of fiber optics.  The curled 48" long clear acrylic rod conducts light by internal reflection. A flashlight or laser pointer can be used for the demonstration.

Sedimentary rocks are types of rocks that are forms by the deposition of materials on the Earth’s surface and within bodies of water. The set included: bituminous coal, breccia, chalk lumps, chert, diatomite, flint, laterite, lime stone black, lime stone siliceous, mud stone, rock phosphate,…

Explore Newton’s laws of motion and demonstrate the equilibrium of forces with this economic tool. The lightweight design and suction cup feet enable placement on horizontal or vertical surfaces, including whiteboards. Included clamps securely hold spring scales in place while allowing for…

Single folding magnifier in an aluminum case. One lens, 25mm diameter, 10x magnification

An exceptional value! This kit includes a variety of Magnets, and accessories for teaching basics of magnetism. Comes in a reusable storage box. Shipping weight 1.5 lb, dimensions: 9.25"; x 9"; x 1.5";. KIT INCLUDES THE FOLLOWING: 1 Steel horseshoe magnet, 3 Ceramic donut magnets, 1…

This easy-to-hold plastic wand contains a ceramic magnet. Use for various activities to learn what items are attracted to magnets. Each wand measures 8” long by 1” wide. Sold as a set of six magnetic wands in assorted colors.

Good quality pipettors designed for easy and precise pipetting. Pumps feature a lever for quick release, and forward or backward wheel movement. The soft elastic chuck has a threaded collar to tightly grip glass or plastic pipettes. Easy to clean. Each size color coded.

This complete set includes an inclined plane with a pulley and protractor, a Hall's carriage, a hanging pan to hold the desired weight, two wooden boards of different sizes, and a metal plate. The set is used to demonstrate the resolution of forces on an inclined plane, uniform and accelerated…

Iron fillings sealed in a transparent plastic cast that measures approx.

United Scientific™ serological pipettes feature black graduations for precise reading and accurate dispensing. Reverse graduations show volume removed or remaining on all pipettes larger than 1 mL. Negative graduations provide additional pipetting volume. Manufactured from transparent USP…

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".

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…

This mineral test kit is useful for rock, mineral and fossil identification. Kit includes: Hardness scale, dropper bottle, hand lens, glass streak plate, black streak plate, white streak plate, cermaic bar magnet, nail and penny.

Good quality, economical hand operated air/vacuum pump is easy to operate. Each squeeze of the pump delivers approximately 15ml, and can be used to create vacuum of 15mm Hg, or air pressure of about 2 atm (standard atmosphere). Pump features a gauge along with a removable cap and elastic valve to…

Clamp holders for rods up to 19mm (0.75") in diameter. Available in Cast Iron or Brass.

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.

Steel rod, zinc-plated extension support rings. Rod diameter 7 mm (0.27”) and the straight rod portion of each is 7.25” (184 mm) long. Open support rings are ideal for use with funnels, boiling flasks, and separatory funnels.

This large van de Graaff generator uniquely offers alternative drive modes, either hand-cranked or motor driven. Excellently constructed, the generator reliably delivers charge and sparks 10cm long and more immediately on setting it in motion, even under high humidity conditions. In hand-cranked…

Help students to investigate the force on an object in circular motion with this convenient kit. Through a series of simple demonstrations, students will better understand the relationship between the radius of the circular motion, the velocity of the moving object, and the external force required…

This standard size (8" x 2.75") water bath is ideal for heating flasks, bottles, tubes, etc. Features seven concentric rings, flat bottom, and a steam escape outlet. Stainless steel construction.

This ingenious device offers a practical and economical solution for light measurements in a variety of learning situations. Whether measuring environmental light or quantifying an optical experiment, this compact luxmeter meets the need. For most uses, the autoranging feature makes this a…

These wood splints (5 1/2“ x 13/64”) are used for variety of applications including as applicators or markers in planting. Sold as a pack of 500.

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".

Zinc plated steel extension rings. Rod diameter is 5/1", overall length is 12".

This clamp can be attached to any standard meter stick. It is used as a knife-edge fulcrum for supporting the meter stick in the inverted position.

Each specimen in this set of five diverse materials cylinders has identical mass and radius. Materials included are acrylic, PVC, nylon, aluminum and brass. Includes a storage box and activity guide.

Set of 2 lenses, 1 concave and 1 convex, 38mm diameter, 150mm focal length.