• Eyepieces - 10X WF Pointer
• Focus - Coaxial Separate Coarse and Fine
• Objectives - 4X, 10X, 40XR
• Magnification - 40X, 100X, 400X
• Head - Dual 45 degrees Stage - Standard Stage 0.065 Condenser and Disc Diaphragm
• LED illumination w/ power cord
Sturdy, well-balanced, aluminum die casted and rubber-footed stand. Locked in wide angle WF 10X eyepieces with built-in calibrated pointer, provides actual measurements of specimens rather than relative sizes. Standard - 4.5 x 4.75" (115 X 120mm) plain stage with locked on stage clips and 5 hole disc diaphragm. Built in illumination system in base with off-on switch and three-wire grounded power. Comes complete with dust cover and instructions. Size 14.5 inches high.
Convert any 24" x 36" A-frame sign into a 2-sided message board sign; displays 7 lines of copy. Contains: 2 large (24" x 36") white sign face with letter tracks, 1 - Set of 314 - 4" black letters and 4" red numbers and symbols.
Ready2Use Next Generation Rolling, Quick Loading, A-frame Style Sidewalk Sign with changeable message boards. Patented and patent pending features for unmatched user friendliness, portability, and affordability. Displays curved sign panels for strength and visual impact. Water filled for stability; can withstand freezing. Just Grip-Tip-Roll to move in or out without lifting/carrying to keep user clean and dry. Includes 2/24"x36"x4mm white sign panels with tracks on one side of each board, 314-4" letters, numbers, and symbols (Black letters and Red Numbers on white background); displays up to 7 lines of copy on each side.
29″ x 42″ x 24″ rolling changeable message board sidewalk sign. Has 2 – 7 line, 24″ x 36″ white or black sign faces with 4″ characters. 2-sided, fast assembly.
CONTAINS:
2 – 24″ x 36″ x 4mm white sign faces with letter tracks on one side of each panel
1 – Set 314 – 4″ letters, numbers and symbols (Black letters, red/white numbers)
2 – Black sign uprights – one with wheels, one without
3 – Black cross tubes
4 – No-slide feet
1 – Set assembly hardware
• Crowd control stanchion never leans due to spring-tension, Sta-Straight technology
• QuikSecure® 5-second setup and tear down requires no tools
• 7.5 foot pro retractable belt
• Belts features a locking button & braking system for slow and safe belt return
• Base is made of scratch-resistant high density polyethylene filled with Duracast
This classic steel stanchion is perfect for safely controlling crowds, directing the flow of foot traffic, or protecting a closed area for construction or cleaning. Unlike other stanchions that begin to wobble over time and require endless repair, these Premium Stanchions will never lean or require maintenance due to their patented Sta-Straight Technology. Designed with four points of contact under continuous tension plus a high-strength compression collar, this spring-tension system keeps the post upright even after extended use. This stanchion also features innovative QuikSecure 5-second setup and tear down that requires no tools for easy twist-and-lock assembly. These receptacles feature a spring safety locking button to keep the belt securely fastened to the post and prevent accidental belt retraction. The base of the Premium Stanchion is made with durable, scratch-resistant high density polyethylene and filled with Duracast, a very high strength concrete.
Explore the basic principles behind electronics.
- Main topics Electrical circuits, resistors, measurement of current and voltage, principle of the electric motor, semiconductors, transistor circuits
- Includes downloadable teaching and activity material (free download)
- Components in this set include: XS motor, 2 push-button switches , 2 diodes, 2 transistors, 3 resistors, 2 capacitors, and a holder for 9V battery (battery not included).
- Ideal accessories Accu Set, PowerSet
Explore the exciting world of electronics with the fischertechnik STEM Electronics set. A total of ten models and 20 experiments teach about the world of electronics in a fun and educational way. Step by step, this building set teaches the basic principles of electronics and deals with a variety of different electronics topics. This building set can be used to construct several exciting models, from simple components to complex ones like alternating flashing lights. Information on the topic, along with fully designed tasks and solutions, are available in our e-Learning area.
Students will be able to build 10 functional models, to learn about and experiment with electrical circuits, AND/OR circuits, principle of the electric motor, series and parallel connection of resistors, pole-changing circuit with diodes, transistor circuits, and a differential amplifier.
All electronic components come pre-mounted on circuit boards for convenient construction of numerous circuits. Set also includes a multimeter for measuring current and voltage.
Includes access to tutorial materials with 20 different experiments.
Materials come packed in sturdy plastic Gratnells storage box with transparent lid.
Total 250 components.
Middle School/High School level.
Fundamentals of Engineering and Construction: The ideal technology construction set for all future mechanical engineers. The areas of dynamics, statics, gears, structure, and bracing are all addressed as students learn by building models that illustrate the principles behind these concepts. This set will help students to answer questions such as:
- How does a gear box work?
- What is a planetary gear?
- How is the movement of a windshield wiper produced?
- How do you design a stable bridge?
- ...and much more.
Requires 9V battery (not included).
The ideal introduction to fundamentals of engineering and construction. Includes 500 components for building 30 different models:
- Bar
- Turntable
- Crank Gear 1
- Crank Gear 2
- Vehicle 1
- Vehicle 2
- Vehicle 3
- Toothed Gearing with Chains
- Vehicle with Steering
- Gearbox
- Planetary Gear
- Bevel Gear
- Kitchen Appliance
- Differential Gear
- Car Jack
- Scissor Elevating Platform
- Lathe
- Windshield Wiper
- Four-bar Chain
- Power Hacksaw Machine
- Beam and Scales
- Scales with Sliding Weight
- Lifting Tackle
- Table
- Double Ladder
- Girder Bridge
- Bridge with Underbeam
- High Hunting Stand
- Crane
Also includes 134 page full color construction booklet with detailed instructions for building all of the above models, as well as a multi-language, black and white teaching guide discussing the various aspects of mechanics and statics, including:
- Dynamics
- Electric Motors
- Worm Gears
- Crank Gears
- Fifth Wheel Steering
- Mandril Screw Spindle, Joint
- Rope Pulleys
- Bracing
...and much more. Also includes Mini Motor, switch and battery tray for 9V block (Battery NOT included).
How can you generate electricity in an environmentally friendly way? How does a fuel cell work, and how can it be used to generate hydrogen? Renewable energies are the most important energy sources of the future. The generation, storage and use of electricity from the natural energy sources of water, wind and sun are clearly explained using nine models and 28 experiments.
- Main topics extraction, storage and use of electric power / energy sources such as water, wind, sun and hydrogen
- Includes downloadable teaching and activity material (free download)
- Components include a solar motor (2VDC), 2 solar modules (1VDC, 400mA), a goldcap energy storage device, an LED, a fuel cell, a voltage converter, and a multimeter
How is environmentally friendly power generated? How does a fuel cell work, and how can you use it to produce hydrogen? Renewable energy sources will become the most important sources of energy in the future. Nine models and 28 experiments are used to demonstrate the production, storage and use of electricity from natural sources like water, wind and solar power. Powerful solar models can be attached in different ways for versatile use in the models. The included Gold Cap serves as an energy storage system, which can also output stored energy. The fuel cell clearly demonstrates how water is split into the two components hydrogen and oxygen. This teaches children about future energy sources and helps them learn important skills. A full set of lesson plans helps teachers use the STEM Renewable Energies set in the classroom.
Students will be able to build 9 functional models, to learn all about how energy from wind, water, sun, and fuel cell technology is generated, stored, and used. Models include a hand generator, wind turbine, wind power plant, vertical wind turbine, water turbine, electric vehicle with solar panels/and with gold cap/with fuel cell.
Components in this set include a solar motor (2VDC),2 solar modules (1VDC, 400mA),a goldcap energy storage device, an LED, a fuel cell, a voltage converter, and a multimeter.
Also includes access to downloadable tutorial materials with 28 different experiments.
Materials come packed in sturdy plastic Gratnells storage box with transparent lid.
Total 268 components.
Middle School/High School level.
• STOP/GO reversible sign
• Heavy-duty 18" dia aluminum sign
• Visible from one hundred yards away
• Bold 6" high letters
• 70" High PVC tube for safe use.
• 24" Steel base
• Sign is printed on both sides.
• Includes flashing red light on "STOP" side.
• Light uses 2 AAA batteries (not included).
This heavy-duty 18" diameter aluminum sign is visible from one hundred yards away, has bold 6" high letters and is easily recognized by pedestrians and motorists. It is supported by a PVC tube for safe use. Has an 24" steel base that allows the double face sign to be rotated. Sign is printed on both sides. Includes flashing red light on "STOP" side. Light uses 2 AAA batteries (not included). 70" High. Ships small package.
• STOP/GO reversible sign
• Heavy-duty 18" dia aluminum sign
• Visible from one hundred yards away
• Bold 6" high letters
• 70" High PVC tube for safe use.
• 18" Steel base
• Sign is printed on both sides.
This heavy-duty 18" diameter aluminum sign is visible from one hundred yards away, has bold 6" high letters and is easily recognized by pedestrians and motorists. It is supported by a PVC tube for safe use. Has an 18" steel base that allows the double face sign to be rotated. Sign is printed on both sides. 70" High. Ships small package.
• STOP/SLOW reversible sign
• Heavy-duty 18" dia aluminum sign
• Visible from one hundred yards away
• Bold 6" high letters
• 70" High PVC tube for safe use.
• 24" Steel base
• Sign is printed on both sides.
• Includes flashing red light on "STOP" side.
• Light uses 2 AAA batteries (not included).
This heavy-duty 18" diameter aluminum sign is visible from one hundred yards away, has bold 6" high letters and is easily recognized by pedestrians and motorists. It is supported by a PVC tube for safe use. Has an 24" steel base that allows the double face sign to be rotated. Sign is printed on both sides. Includes flashing red light on "STOP" side. Light uses 2 AAA batteries (not included). 70" High. Ships small package.
• STOP/SLOW reversible sign
• Heavy-duty 18" dia aluminum sign
• Visible from one hundred yards away
• Bold 6" high letters
• 70" High PVC tube for safe use.
• 18" Steel base
• Sign is printed on both sides.
This heavy-duty 18" diameter aluminum sign is visible from one hundred yards away, has bold 6" high letters and is easily recognized by pedestrians and motorists. It is supported by a PVC tube for safe use. Has an 18" steel base that allows the double face sign to be rotated. Sign is printed on both sides. 70" High. Ships small package.
• STOP/STOP reversible sign
• Heavy-duty 18" dia aluminum sign
• Visible from one hundred yards away
• Bold 6" high letters
• 70" High PVC tube for safe use.
• 24" Steel base
• Sign is printed on both sides.
• Includes flashing red light on both sides.
• Lights use 2 AAA batteries (not included).
This heavy-duty 18" diameter aluminum sign is visible from one hundred yards away, has bold 6" high letters and is easily recognized by pedestrians and motorists. It is supported by a PVC tube for safe use. Has an 24" steel base that allows the double face sign to be rotated. Sign is printed on both sides. Includes flashing red light on each "STOP" side. Each light uses 2 AAA batteries (not included). 70" High. Ships small package.
• STOP/STOP reversible sign
• Heavy-duty 18" dia aluminum sign
• Visible from one hundred yards away
• Bold 6" high letters
• 70" High PVC tube for safe use.
• 18" Steel base
• Sign is printed on both sides.
This heavy-duty 18" diameter aluminum sign is visible from one hundred yards away, has bold 6" high letters and is easily recognized by pedestrians and motorists. It is supported by a PVC tube for safe use. Has an 18" steel base that allows the double face sign to be rotated. Sign is printed on both sides. 70" High. Ships small package.
Determine the relative effectiveness of various commercial sunscreen lotions under laboratory conditions. Can serve to promote scientific investigation of consumer products. The experiments consist of allowing light energy to act upon a photosensitive chemical agent with the blocking of the light energy dependent upon sunscreen employed. After the exposure the amount of chemical conversion is measured and plotted as a function of the "Sun Protection Factor", SPF. Kit is designed for 24 students working in groups of 4. Grades 6-8.
This is the world's most acclaimed hand-held detector. For many years now, it has been the hand-held detector of choice by law enforcement officials and security personnel. Ultimate sensitivity not subject to arbitrary adjustment. Order Recharge Kit (SA115P) separately.
• Black Post with Black Base
• 12' slow retracting belt
• Constructed of weatherproof High Density Plastic (HDPE)
• The ideal choice for outdoor safety barricades. T
• Push-Snap no tools assembly makes transport and setup easy
• Fillable hollow base
• 15 belt colors/styles
Our Tempest Crowd Control Posts with 12' slow retracting belts, are constructed of weatherproof High Density Plastic (HDPE) making it the ideal choice for outdoor safety barricades. Tempest's unique design and highly visible colors make it a smart choice for an airport taxi queue or sport stadium ticket line. The patent pending "push-snap" no tools assembly makes transport and setup easy. The hollow base is filled with liquid or sand bringing the prefilled weight from less than 4 lbs. to 17.5 lbs. Stanchions have a black base with black upright. Belt available in black, red, burgundy, grey, bronze, blue, navy, olive green, forest green, silver/black, black/neon yellow, black/red, safety black/yellow, florescent yellow or orange.
• Black Post with Black Base
• 12' slow retracting belt
• Constructed of weatherproof High Density Plastic (HDPE)
• The ideal choice for outdoor safety barricades. T
• Push-Snap no tools assembly makes transport and setup easy
• Fillable hollow base
• 2 belt messages available
Our Tempest Crowd Control Posts with 12' slow retracting belts (black only), are constructed of weatherproof High Density Plastic (HDPE) making it the ideal choice for outdoor safety barricades. Tempest's unique design and highly visible colors make it a smart choice for an airport taxi queue or sport stadium ticket line. The patent pending "push-snap" no tools assembly makes transport and setup easy. The hollow base is filled with liquid or sand bringing the prefilled weight from less than 4 lbs. to 17.5 lbs. Stanchions have a black base with black upright. Belt available with CAUTION - PLEASE DO NOT ENTER, or PLEASE DO NOT ENTER - TEMPORARILY CLOSED message.
• Orange Post with Black Base
• 12' slow retracting belt
• Constructed of weatherproof High Density Plastic (HDPE)
• The ideal choice for outdoor safety barricades. T
• Push-Snap no tools assembly makes transport and setup easy
• Fillable hollow base
• 15 belt colors/styles
Our Tempest Crowd Control Posts with 12' slow retracting belts (black only), are constructed of weatherproof High Density Plastic (HDPE) making it the ideal choice for outdoor safety barricades. Tempest's unique design and highly visible colors make it a smart choice for an airport taxi queue or sport stadium ticket line. The patent pending "push-snap" no tools assembly makes transport and setup easy. The hollow base is filled with liquid or sand bringing the prefilled weight from less than 4 lbs. to 17.5 lbs. Stanchions have a black base with orange upright. Belt available in black, red, burgundy, grey, bronze, blue, navy, olive green, forest green, silver/black, black/neon yellow, black/red, safety black/yellow, florescent yellow or orange.
• Orange Post with Black Base
• 12' slow retracting belt
• Constructed of weatherproof High Density Plastic (HDPE)
• The ideal choice for outdoor safety barricades. T
• Push-Snap no tools assembly makes transport and setup easy
• Fillable hollow base
• 2 belt messages available
Our Tempest Crowd Control Posts with 12' slow retracting belts (black only), are constructed of weatherproof High Density Plastic (HDPE) making it the ideal choice for outdoor safety barricades. Tempest's unique design and highly visible colors make it a smart choice for an airport taxi queue or sport stadium ticket line. The patent pending "push-snap" no tools assembly makes transport and setup easy. The hollow base is filled with liquid or sand bringing the prefilled weight from less than 4 lbs. to 17.5 lbs. Stanchions have a black base with orange upright. Belt available with CAUTION - PLEASE DO NOT ENTER, or PLEASE DO NOT ENTER - TEMPORARILY CLOSED message.
• Understand the remarkable reactions behind ordinary occurrences.
• Professional quality equipment helps you make the most of your chemistry experiments.
• This kit introduces you to the alcohol burner for experiments that require heat.
• The 128-page, full-color manual
• 250 experiments
• Provides clear instructions for preparing and performing the experiments and explains the results.
• Ages 11 and up.
Discover how fascinating the world is when you understand the remarkable reactions behind ordinary occurrences. CHEM C2000 includes everything in CHEM C1000 and more — with twice the tools and materials, and more than three times the experiments. Most notably, this kit introduces you to the alcohol burner for experiments that require heat, greatly expanding the number of experiments you can conduct. Experiment with filtering and separating mixtures, combustion, and electrochemical reactions. Learn how to work with indicators and stronger acids and bases. Explore elements and compounds, including the chemical and physical properties of water, carbon dioxide, oxygen, hydrogen, and carbon. Discover atoms and molecules. Inspect soaps and household cleaners. Experiment with various foods from the kitchen to learn about sugars, fats, and proteins. Investigate metals such as iron, copper, and aluminum. Learn about how chemistry is used in environmental protection and industry. After completing CHEM C2000, you will have experienced firsthand the most important topics in chemistry, creating an excellent foundation for later study of chemical equations and atomic structure. The 128-page, full-color manual guides aspiring young chemists through 250 experiments. The manual provides clear instructions for preparing and performing the experiments and explains the results. Thorough safety precautions and instructions ensure safe experimentation. Professional quality equipment helps you make the most of your chemistry experiments. Ages 11 and up.
• The ultimate chemistry kit
• Designed and manufactured in Germany for safe experimentation
• Over 333 experiments in 32 sections
• Start with fun experiments to learn basic chemistry principles
• 192-page, full-color experiment manual
• Hands-on approach to teaching chemistry
• An excellent preparation for highschool level chemistry.
• Ages 12 and up.
CHEM C3000 is the ultimate chemistry set. This kit includes all of the components from CHEM C2000, plus dozens of additional tools and chemicals, and 100 additional experiments, for a total of more than 333 experiments. The 192-page, full-color experiment manual is written at a more advanced level than the other CHEM kit manuals. You could call it a textbook, but the manual is too much fun to make that comparison. CHEM C3000 has a similar hands-on approach to teaching chemistry as our other CHEM kits, but also teaches more advanced topics such as chemical equations, atomic structures, and the periodic table. These concepts are critical to continued study of chemistry. CHEM C3000 is an excellent preparation for highschool level chemistry. Ages 12 and up.
• Durable herringbone weave design
• Rubberized fabric-tire links
• Ideal for schools, industrial or factory entrances
• Easily rolled for cleaning
• Overall thickness: 5/8"
• Available in black only
• Available in 6 Sizes
This 17in x 25in interlocking linked mat utilizes fabric impregnated rubber secured with 12 gauge galvanized spring steel rods. Dirt falls between herringbone pattern for easy cleaning-simply roll up mat and sweep or hose the floor underneath. Overall thickness, 5/8" Available in black only. Available in six size. Ships UPS or FedEx Ground.
Study of the chemical composition of toothpastes. Students evaluate several toothpastes for percent of solids, pH, foam formation, abrasive action, specific substances. They use this data to make judgments about their effectiveness. Materials for 12 pairs of students. Grades 7-12.
• Message Displayed on Large Sheeted area 8.1” x 36”
• Stackable & durable made from UV stabilized HDPE material
• Easy set up and relocation
• Secures in place with recycled rubber base that slides over the top
• Designed to withstand impact
• Overall dimensions: 44.6"H x 8"D x 15"W
• 7 legend options
• Available with 15, 20 or 30 lb base.