Black bristle. Double tufted end. 1 3/4" brush diameter. 16" overall length.
Black bristle. Double tufted end. 1 3/4" brush diameter. 16" overall length.
Designed to demonstrate the attraction-repulsion theory of magnetism. Students use five colored ceramic washer magnets and a 6" dowel to perform this popular experiment and others. Includes activity booklet and storage case.
Fluorescent green knit cotton/polyester gloves with black PVC dots on both sides. One size fits all.
Replacement bulb for microscopes with fluorescent illumination. 5W, 110V
Replacement bulb for microscopes with fluorescent illumination. 5W, 110V
Superior Performance combined with Superior Comfort. Ideal for large indoor stadiums, outdoor arenas, on site disaster management, search & rescue! Advanced science and technology makes the Sonik Blast CMG Safety Pealess Whistle the most efficient whistle in its class! Precise whistle chamber calibration assures pure frequency performance; less effort, crisper sound. Flawless patented pealess whistle emits distinct louder pitch without a lot of effort. Superior clear loud blast can be heard over long distances and intense ambient noise. Cushioned Mouth Grip provides additional comfort and is perfect for reliably holding the whistle in the mouth in wet conditions. Design: 2-chamber/4 resonators; pealess + Cushioned Mouth Grip (CMG). Sound Power: Exceeds 120 dB.
Better Grip. Better Control. Better Protection. This whistle is the same as the Classic FOX whistle, but has an added CMG (Cushioned Mouth Grip). The Classic CMG is ideal for those who need to hold the whistle in their mouth for extended periods of time. From sports officials to lifeguards and crossing guards, the innovative thermoplastic CMG provides superior grip and protection for your teeth.
Better Grip. Better Control. Better Protection. This whistle is the same as the Classic FOX whistle, but has an added CMG (Cushioned Mouth Grip). The Classic CMG is ideal for those who need to hold the whistle in their mouth for extended periods of time. From sports officials to lifeguards and crossing guards, the innovative thermoplastic CMG provides superior grip and protection for your teeth.
• Quality tested and ensured for maximum durability
• Designed with only the toughest, roughest users in mind
• Flawless, consistent and reliable
• No moving parts to freeze, jam or deteriorate
• The harder you blow, the louder the sound
• Sound will be heard up to a mile away
• 3-chamber pealess whistle
• Chambers are designed to self-clear when submerged in water
• Sound Power of 115dB
• Made in USA
• Available in 9 colors
The Fox 40® Classic® is the standard choice referees and coaches at all levels, rescue professionals and general safety worldwide. The famous Fox professional whistle is not affected by moisture (it has the same shrill tone even after immersing in water). Will be heard above ambient noise, loud crowds, the roar of engines, breaking waves and thundering gale-force winds. Carriers great distances outdoors with ultra shrill tone.Available in 9 colors.
Includes 1 each of 1, 5, 10, 50 and 500 mg weights; 2 each of 2, 20 and 200 mg weights. Comes in rectangular plastic box with rider and forceps
Includes 1 each of 1, 5, 10, 50 and 500 mg weights; 2 each of 2, 20 and 200 mg weights. Comes in rectangular plastic box with rider and forceps
12" x 12" Cotton Friction Pad.
12" x 12" Cotton Friction Pad.
12" x 12" Silk riction pad.
12" x 12" Silk friction pad.
12" x 12" Wool friction pad.
12" x 12" Wool friction pad.
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" Hollow glass friction rod. Approximately 1/2" in diameter.
12" Hollow glass friction rod. Approximately 1/2" in diameter.
12" Solid plastic friction rod. Approximately 1/2" in diameter.
12" Solid plastic friction rod. Approximately 1/2" in diameter.
For one funnel. Attaches to ring stand to support funnel.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Maximum clarity, unsurpassed quality and corrosion resistant. Thickness No. 0. There are approx 180 18mm x 18mm coverslips per ounce.
Maximum clarity, unsurpassed quality and corrosion resistant. Thickness No. 0. There are approx 180 18mm x 18mm coverslips per ounce.
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.
Heat resistant glass stirring rods with rounded ends. Pack of 12.
5mm, 8 inch long heat resistant stirring rod made of soft flint glass. They are essential for mixing and stirring chemicals and liquids. Both ends of each rod are fire-polished and rounded, so they don't hurt hands and are easy to operate. Pack of 12.
Discover the Red-bellied Turtle, which is nearly extinct. Uncover a Garter Snake in your backyard. Locate an Alligator Lizard--or a Legless one. Identifying reptiles is fascinating and fun with this classic Golden Field Guide. Abundant illustrations and the Key Characteristic system, preferred by professionals, make this single-volume reference an outstanding choice for nature projects, collectors of all ages, and scientific study.
• All of North America in one volume
• 278 species and 500 subspecies in 22 families...plus 18 exotics
• Illustrations include juveniles and adults, body forms, undersides, scales, and more!
• Text, range maps, and illustrations seen together at a glance
• Common and scientific names
• Convenient measuring rules
• Plus first aid information for snakebites.
This full-color, authoritative look at the behavior and biology of birds is packed with information on:
• How birds fly, migrate, nest, sing, raise their young, and more
• Ways to observe birds as they go about their daily lives
• How to attract and care for backyard birds
A perfect complement to identification guides, this Golden Guide from St. Martin's Press is destined to become a staple in the library of every bird lover and student.
A guide to the most familiar American birds. 129 birds in full-color. This guide will help you identify-quickly and easily-the birds you are most likely to see. It tells you:
• What to look for
• Where and when to look
• How to attract birds
Range maps show where each bird is found, and handy tables at the back of the book contain a wealth of additional information about migration, eggs, nests, and food. This is the perfect bird book for beginners at any age.
Common American species. 423 color illustrations.
Common American species. 423 color illustrations.
This is a practical beginner's guide to the most common American wildflowers. Emphasis is on those with showy petals and those that the amateur is most likely to see. Special features include:
• Where to look for wildflowers
• Tips on how to collect and grow them
• Simplified range maps
As an added aid to quick and easy identification, the flowers are grouped according to color.