Sign meets the Manual on Uniform Traffic Control Devices (MUTCD) specifications for shape, color, dimensions, legend and illuminationn set forth by the Office of Traffic Operations, Federal Highway Administration, U.S. Department of Transportation. 24" x 8" (Yellow).
Natural gas bunsen burner for high temperature work. Nickel-plated brass tube with rotatable non-removable air regulator. Perforated metal burner head 25 mm diameter produces an evenly aerated flame of uniform intensity. On heavy stable cast-iron base, baked hammertone finish, with serrated gas inlet tube 9 mm diameter.
The 21 plastic fossils and detailed Laboratory Manual in this kit will let your students become practicing paleontologists. Kit conveys importance of fossil study to investigations in geology, history, mapping, and stratigraphic correlation. Grades 7-12.
• Works well at job sites, parking lots, crowd control etc.
• Durable and water resistant units
• Batteries last up to 100 hours
• Visible up to 3000 yards away
• Bright, long lasting colored LED lights
• Three settings
• Uses 2 C batteries (not included)
• 13.3" overall length, light is 6.5" long
This Light Wand is very affordable, almost to the point of being disposable. Works well at job sites, parking lots, crowd control etc. Durable and water resistant units. Batteries last up to 100 hours. Bright, colored LED lights are visible up to 3000 yards away and good for over 100,000 hours of run time. Triple function: constant flashing (fast), constant flashing (slow) and continuous light. Uses 2 C batteries (not included) 13.3" overall length, light is 6.5" long.
• Made with 0.35mm thick waterproof PVC laminated to rayon material
• Dual air flow ventilation
• Machine welded seems
• Corduroy collar for comfort
• Windproof double fly snap closure
• Snap sleeve and leg closure
• Exclusive STORMMAX protection ensures dryness and comfort
• Applications: Crossing guards, survey crews, law enforcement, ranching, and forestry.
Built for tough conditions, this rainwear is made with 0.35mm thick waterproof PVC laminated to durable rayon for long-lasting protection. Dual air flow ventilation and machine-welded seams keep you dry and comfortable, while a soft corduroy collar adds extra comfort. The windproof double fly snap closure, along with snap sleeve and leg closures, ensure a secure fit against harsh weather. Featuring exclusive STORMMAX® protection, it’s designed to deliver maximum dryness and comfort in the field. Ideal for crossing guards, survey crews, law enforcement, ranching, and forestry, this gear is ready for any storm.
5' long galvanized steel posts for use with pennant streamers, ropes, etc. Pinched end for easy placement, open slot steel ring for easy threading.
Due to high demand, this item can take 2 to 4 weeks for delivery.
ANSI 207 PSV Breakaway Public Safety Vest with polyester tricot front panel and mesh back panel. One interior open pocket and 4 pen pockets. Adjustable hook & loop front closure. Mic tabs. 2" AwareLite reflective trim.
Unmounted, high-quality optical glass with ground edges. Set includes 6 lenses: 1. Double convex 2. Plano convex 3. Concave/convex 4. Double concave 5. Plano concave 6. Convex/concave.
Unmounted, high-quality optical glass with ground edges. Set includes 6 lenses: 1. Double convex 2. Plano convex 3. Concave/convex 4. Double concave 5. Plano concave 6. Convex/concave.
This burette has a clear acrylic body and leak proof stopcock with a self lubricating PTFE plug. Each burette is individually calibrated for maximum accuracy. Acrylic body is resistant to dilute mineral acids and bases except Hydrofluoric Acid and Ammonium Hydroxide. It can be used with pHs ranging from 1 to 14 and with up to 5% weight per weight of acids or 30% of bases. Graduations are at 0.1 ml.
This burette has a clear acrylic body and leak proof stopcock with a self lubricating PTFE plug. Each burette is individually calibrated for maximum accuracy. Acrylic body is resistant to dilute mineral acids and bases except Hydrofluoric Acid and Ammonium Hydroxide. It can be used with pHs ranging from 1 to 14 and with up to 5% weight per weight of acids or 30% of bases. Graduations are at 0.1 ml.
This burette has a clear acrylic body and leak proof stopcock with a self lubricating PTFE plug. Each burette is individually calibrated for maximum accuracy. Acrylic body is resistant to dilute mineral acids and bases except Hydrofluoric Acid and Ammonium Hydroxide. It can be used with pHs ranging from 1 to 14 and with up to 5% weight per weight of acids or 30% of bases. Graduations are at 0.1 ml.
This burette has a clear acrylic body and leak proof stopcock with a self lubricating PTFE plug. Each burette is individually calibrated for maximum accuracy. Acrylic body is resistant to dilute mineral acids and bases except Hydrofluoric Acid and Ammonium Hydroxide. It can be used with pHs ranging from 1 to 14 and with up to 5% weight per weight of acids or 30% of bases. Graduations are at 0.1 ml.
This burette has a clear acrylic body and leak proof stopcock with a self lubricating PTFE plug. Each burette is individually calibrated for maximum accuracy. Acrylic body is resistant to dilute mineral acids and bases except Hydrofluoric Acid and Ammonium Hydroxide. It can be used with pHs ranging from 1 to 14 and with up to 5% weight per weight of acids or 30% of bases. Graduations are at 0.1 ml.
This burette has a clear acrylic body and leak proof stopcock with a self lubricating PTFE plug. Each burette is individually calibrated for maximum accuracy. Acrylic body is resistant to dilute mineral acids and bases except Hydrofluoric Acid and Ammonium Hydroxide. It can be used with pHs ranging from 1 to 14 and with up to 5% weight per weight of acids or 30% of bases. Graduations are at 0.1 ml.
Includes: scalpel with replaceable blade, 4 1/2" scissors, 4 1/2" scissors fine point, 4 1/2" forceps, 4 1/2" fine point forceps, mall probe, straight teasing needle, curved teasing needle, dropping pipet, clear plastic ruler, soft vinyl case, 12 loop.
Aluminum Metal (20 gauge sheet) - 12" x 12" x .032"
• Meets ANSI/ISEA Z89.1, TYPE 1 Class C, E, and G.
• 4-point woven nylon suspension.
• Moisture-wicking brow pad is removable, washable and replaceable.
• SEI Certified. Meets the low temperature (LT) option of the Z89.1 Standard.
• Accommodates a chin strap.
• Goggle retaining slots on suspension.
• Both Mega Ratchet and Slide-Lock Suspensions adjust to head sizes - 6.5 - 8.
These full brim safety helmets have 4-Point woven nylon suspension, and can accommodate a chin strap. Goggle retaining slots on suspension. Moisture wicking brow pad is removable, washable & replaceable. Slide-Lock size adjustment for head sizes 6.5 - 8. Weight: 13.58 oz. SEI Certified. ANSI/ISEA Z89.1, type 1, Class C, E and G requirements. Available in 4 colors.
• Adjustable hoop & loop closure
• ANSI/ISEA 107 Class headwear
• Adjustable size
Demonstrates the principle of Archimedes. Consists of two pieces: cylinder and close fitting bucket. All brass construction. 50mm long.
Demonstrates the principle of Archimedes. Consists of two pieces: cylinder and close fitting bucket. All brass construction. 50mm long.
24" x 36" full color laminated poster.
Arthropods are animals that have an external skeleton. They are the most abundant animals on Earth but are often misunderstood. Spiders, millipedes, and other arthropods are often mistakenly referred to as “insects” and “bugs.” This poster explains the differences.
Each of the five clades (formerly subphylum) is carefully explored. Highly detailed illustrations show an incredible 98 species, many life size. All are identified by both common and scientific names.
Insects account for the great bulk of the arthropods, and this poster includes representatives of all the major orders. The crustaceans include crabs and lobsters as well as shrimp, krill, and even barnacles. Included with them is the giant sea scorpion; this long-extinct animal is the largest arthropod that ever lived, reaching a length of six feet.
This remarkable poster even includes the prehistoric trilobites. They were the dominant life form during the Permian but became extinct. Highly educational, very attractive, and decorative, this poster appeals to teachers, students, collectors, and professional entomologists.
24" x 36" full color laminated poster. Arthropods are animals that have an external skeleton. They are the most abundant animals on Earth but are often misunderstood. Spiders, millipedes, and other arthropods are often mistakenly referred to as “insects” and “bugs.” This poster explains the differences. Each of the five clades (formerly subphylum) is carefully explored. Highly detailed illustrations show an incredible 98 species, many life size. All are identified by both common and scientific names. Insects account for the great bulk of the arthropods, and this poster includes representatives of all the major orders. The crustaceans include crabs and lobsters as well as shrimp, krill, and even barnacles. Included with them is the giant sea scorpion; this long-extinct animal is the largest arthropod that ever lived, reaching a length of six feet. This remarkable poster even includes the prehistoric trilobites. They were the dominant life form during the Permian but became extinct. Highly educational, very attractive, and decorative, this poster appeals to teachers, students, collectors, and professional entomologists.
A creative way for children to learn astronomy concepts. Players toss the 24" ball to each other and call out the answers to the problem found under their left thumb. Many variations of play! Includes a list of game suggestions with directions and answers! For grades 4-8.
Newton's Second Law of Motion. Demonstrates inertia.
Newton's Second Law of Motion. Demonstrates inertia.
Illustrates linear and spherical expansion by heating and contraction by cooling. Mild steel bar 110x12.5mm, length x diameter. Mounted on a rod with wooden handle and a brass gauge 150x38mm with a cutout mounted on a separate wooden handle which just admits the bar lengthways and a hole into which the bar passes endways when cold.
Illustrates linear and spherical expansion by heating and contraction by cooling. Mild steel bar 110x12.5mm, length x diameter. Mounted on a rod with wooden handle and a brass gauge 150x38mm with a cutout mounted on a separate wooden handle which just admits the bar lengthways and a hole into which the bar passes endways when cold.