Unmounted, high-quality silvered glass. Focal length 150 mm.
Unmounted, high-quality silvered glass. Focal length 150 mm.
Diffraction grating spectroscope is used to show that sunlight can be broken into colored light and to study these colors and their relationships. Students view different types of light and compare the spectra. A preparation for understanding methods used in astronomy. 1" diameter.
Diffraction grating spectroscope is used to show that sunlight can be broken into colored light and to study these colors and their relationships. Students view different types of light and compare the spectra. A preparation for understanding methods used in astronomy. 1" diameter.
Rugged plastic pulley with deep V groves mounted on a metal clamp. The sheave is 50mm in diameter. Clamp can be mounted on surfaces up to 25mm thick.
Rugged plastic pulley with deep V groves mounted on a metal clamp. The sheave is 50mm in diameter. Clamp can be mounted on surfaces up to 25mm thick.
Pulley is high-quality impact-resistant, chip-proof injection molded, balanced wheel. Smooth, clean V-groove. Wheel diameter 2", 360 degrees swivel hooks-top and bottom. All steel blocks.
Pulley is high-quality impact-resistant, chip-proof injection molded, balanced wheel. Smooth, clean V-groove. Wheel diameter 2", 360 degrees swivel hooks-top and bottom. All steel blocks.
General purpose use and also for use with inclined plane. Metal pan with cords for suspension.
Hard rubber, ebonite friction rod with rounded edges about 11 Inch (280mm) x 0.47 Inch (12mm) Length x Diameter. Measurements are approximate.
Hard rubber, ebonite friction rod with rounded edges about 11 Inch (280mm) x 0.47 Inch (12mm) Length x Diameter. Measurements are approximate.
12" Solid plastic friction rod. Approximately 1/2" in diameter.
12" Solid plastic friction rod. Approximately 1/2" in diameter.
Strong plastic construction. These Buzzers are an essential electrical part for use in Physics electrical circuits and Sound experiments and other general lab use. Buzzer dia. 1.15" (29mm) x 0.58" (14.8mm) thick. Base 1.89" (48mm) long, with two holes 0.13" (3.48mm) dia. for mounting. Connecting wire 4" (100mm) long.
Strong plastic construction. These Buzzers are an essential electrical part for use in Physics electrical circuits and Sound experiments and other general lab use. Buzzer dia. 1.15" (29mm) x 0.58" (14.8mm) thick. Base 1.89" (48mm) long, with two holes 0.13" (3.48mm) dia. for mounting. Connecting wire 4" (100mm) long.
22 Gauge insulated copper wire. 100 ft. Color: White
22 Gauge insulated copper wire. 100 ft. Color: White
22 Gauge insulated copper wire. 100 ft. Color: Black
22 Gauge insulated copper wire. 100 ft. Color: Black
Extra flexible, rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.
Extra flexible, 24 inch rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.
Outside Diameter: 15mm, Height: 110mm, Graduated Interval: 0.2ml Measuring Cylinders with a hexagonal base. The hexagonal base provides excellent stability to the cylinder, and the tapered spout works really well while pouring any reagents.
Outside Diameter: 15mm, Height: 110mm, Graduated Interval: 0.2ml Measuring Cylinders with a hexagonal base. The hexagonal base provides excellent stability to the cylinder, and the tapered spout works really well while pouring any reagents.
Outside Diameter: 72mm, Height: 375mm, Graduated Interval: 10ml Our Measuring Cylinders are molded as one-piece in polypropylene. These autoclavable cylinders have raised prominent graduations for easy reading and have excellent contact clarity. The broad round base provides good stability.
Outside Diameter: 72mm, Height: 375mm, Graduated Interval: 10ml Our Measuring Cylinders are molded as one-piece in polypropylene. These autoclavable cylinders have raised prominent graduations for easy reading and have excellent contact clarity. The broad round base provides good stability.
Outside Diameter: 56mm, Height: 361mm, Graduated Interval: 5ml Our Measuring Cylinders are molded as one-piece in polypropylene. These autoclavable cylinders have raised prominent graduations for easy reading and have excellent contact clarity. The broad round base provides good stability.
Outside Diameter: 56mm, Height: 361mm, Graduated Interval: 5ml Our Measuring Cylinders are molded as one-piece in polypropylene. These autoclavable cylinders have raised prominent graduations for easy reading and have excellent contact clarity. The broad round base provides good stability.
Outside Diameter: 34mm, Height: 210mm, Graduated Interval: 1ml Our Measuring Cylinders are molded as one-piece in polypropylene. These autoclavable cylinders have raised prominent graduations for easy reading and have excellent contact clarity. The broad round base provides good stability.
Outside Diameter: 34mm, Height: 210mm, Graduated Interval: 1ml Our Measuring Cylinders are molded as one-piece in polypropylene. These autoclavable cylinders have raised prominent graduations for easy reading and have excellent contact clarity. The broad round base provides good stability.
Plastic Base w/ Bumper Guards. Graduation Interval: 1ml
Plastic Base w/ Bumper Guards. Graduation Interval: 1ml
Graduation Interval: 0.5ml Borosilicate cylinder with pour spout features single "to contain" scales. Hexagonal base.
Graduation Interval: 0.5ml Borosilicate cylinder with pour spout features single "to contain" scales. Hexagonal base.
Glazed porcelain, one-piece construction. With fixed perforated plate. Straight sides with tapered stem.
This Type 1 (DIN# GL-45) Borosilicate Glass, general purpose media bottle is autoclavable with permanent white imprinted graduations and marking spots. The screw thread opening has an ID of approximately 300m. The supplied cap is liner-less and both the cap and drip free ring are polypropylene autoclavable to 140 degrees Celsius (284 degrees Fahrenheit).
This concise introduction to the life of the past as revealed through fossils, is an invaluable and enjoyable guide which includes:
• Descriptions of the typical plants and animals of major geological eras
• Maps showing where fossils can be found
• The history of the development of life on earth
• Full-color illustrations
Life of the past as revealed through fossils. 481 illustrations.
This guide describes and illustrates, in full color, the plants and animals that live in or near ponds, lakes, streams, and wetlands. It includes surface-dwelling creatures as well as those of open water, the bottom, and the shore and tells how various animals and plants live together in a community.
Plus suggestions for:
• Where and when to look
• Observing and collecting specimens
• Making exciting discoveries
Maximum clarity, unsurpassed quality and corrosion resistant. Thickness No. 0. There are approx 125 22mm x 22mm coverslips per ounce.
Maximum clarity, unsurpassed quality and corrosion resistant. Thickness No. 0. There are approx 125 22mm x 22mm coverslips per ounce.