30 Pack Clear Rulers for Classroom, Bulk 12 Inch Ruler Set for Students
30 Pack Clear Rulers for Classroom, Bulk 12 Inch Ruler Set for Students
About this item
- Crystal-Clear PS Material: PS plastic delivers extremely light transmittance, making every millimeter marking clearly visible even under dim classroom lighting. Sturdy enough to survive a full school year without warping or breaking
- Dual-Scale for Classroom & Homework: Inches on one side, millimeters on the other — kids can switch between US standard and metric without a second ruler. Meets common core math requirements from Grade 1 through middle school
- Smooth Edges: No More Scratched Fingers — All edges are precision-rounded so active kids can use them safely in class without supervision. Lightweight design fits flat in any pencil case or backpack without taking up space
- Value Pack, Zero Shortfall: Stock your entire classroom in one order. No need to reorder mid-semester. Compared to choosing individually, this bulk set offers greater budget savings — practical for teachers and parent volunteers managing group supplies
- Package: This set includes 30 pack clear rulers, each measuring 12 × 1.1 inches (30.5 × 2.8 cm) with a 0.2 cm thickness, featuring a dual 0–12 inch / 0–30 cm scale, made of high-clarity PS, and every ruler is individually inspected to guarantee precise scale alignment
Overview
- Material: Plastic
- Brand: DUIJINYU
- Color: Silver
- Style: Modern
- Product Dimensions: 12"L x 1.1"W
Couldn't load pickup availability
Low stock: 10 left
View full details

Reviews
-
⭐⭐⭐⭐⭐
Hannah Miller — Seattle, Washington
I ordered several science activity supplies for projects at home. The product descriptions made it easier to compare the available options, and everything fit neatly into our learning space. Stemora made finding tools for hands-on activities feel simple and organized. -
⭐⭐⭐⭐⭐
Daniel Foster — Austin, Texas
I found a useful selection of electronics and robotics accessories for a beginner project. It was convenient to browse related components in clearly organized categories. I would consider shopping here again when planning another maker activity. -
⭐⭐⭐⭐⭐
Lauren Bennett — Denver, Colorado
The measurement and observation tools I selected worked well for the classroom activities I had planned. I especially appreciated being able to review the product details before ordering and choose items that matched the lesson requirements. -
⭐⭐⭐⭐⭐
Jason Parker — Portland, Oregon
I purchased a few storage items and small tools for organizing my maker workspace. The products helped keep components, wires, and project materials easier to sort and access. The overall shopping experience was straightforward and convenient.
New Arrivals
-
Roaring Spring Top Bound Science Lab Notebook, 24 Pack, Carbonless 4x4 Graph Ruled, 50 Numbered Sets, 8" x 11" 15# White/Blue Paper, Proudly Made in USA, Hard Board Covers - style: 24-Pack
Regular price $781.43 USDRegular priceSale price $781.43 USD -
Amazon.com. Spend less. Smile more.
Regular price $47.39 USDRegular priceSale price $47.39 USD -
PATIKIL 40ml Test Tubes, 10pcs 5.51x0.98" Plastic Clear Round Bottom Test Tube Containers with Caps for Bead Party Candy Bath Salt Storage Scientific Experiment Plant Propagation, Black
Regular price $15.42 USDRegular priceSale price $15.42 USD -
Cute Spiral Notebook Thick Lined Journal B5 with Pocket, Iris - color: Iris, size: B5
Regular price $33.18 USDRegular priceSale price $33.18 USD -
Roaring Spring Top Bound Science Lab Notebook, Carbonless 4x4 Graph Ruled, 50 Numbered Sets, 8" x 11" 15# White/Blue Paper, Proudly Made in USA, Hard Board Covers (Pack of 1) - style: Pack of 1
Regular price $26.74 USDRegular priceSale price $26.74 USD -
YouCopia RollOut Caddy Rolling Storage Bin with 2 Adjustable Dividers and Removable Basket for Kitchen and Bathroom Under Sink Organization, 8" Wide
Regular price $49.78 USDRegular priceSale price $49.78 USD -
Mewise Classroom Calendar Pocket Chart for Wall, Weather Pocket Chart for Kids, Groovy Classroom Decor Set Includes 126 Cards, Hanging Display for School, Homeschool, Kindergarten, Bulletin Board (White) - color: White
Regular price $19.90 USDRegular priceSale price $19.90 USD -
Chanzon 40pcs 30cm Long Male to Male Header Jumper Wire Dupont Cable Line - color: (1) Male to Male (40pcs), size: 30CM
Regular price $11.60 USDRegular priceSale price $11.60 USD -
XREXS Digital Kitchen Timer Magnetic Countdown Up Cooking Loud Alarm
Regular price $21.56 USDRegular priceSale price $21.56 USD -
HANZE Toothbrush and Toothpaste Holder Wall Mounted – Space-Saving Bathroom Organizer (Black) - color: 4 Person - Black
Regular price $24.88 USDRegular priceSale price $24.88 USD -
Mewise Classroom Calendar Pocket Chart and Weather Station Set - Groovy Retro Classroom Decor, 126+ Cards Bulletin Board Display for Morning Meeting, Homeschool Supplies, PreK-2nd Grade (Black) - color: Black
Regular price $15.59 USDRegular priceSale price $15.59 USD -
Digital Multimeter Voltmeter TRMS 4000 Counts Non-Contact Voltage Tester - color: Orange
Regular price $26.53 USDRegular priceSale price $26.53 USD -
Honoson 20 Pcs Sanding Sticks Model, Low and High Grits, Moon Style - style: Moon Style
Regular price $16.58 USDRegular priceSale price $16.58 USD -
Laboratory Notebook: Paperback notebook for Students and Researchers - 142 Pages (numbered) - 4 x 4 Quad Graph Paper | Black
Regular price $16.58 USDRegular priceSale price $16.58 USD -
Makerzoid Smart Robot,72-in-1 STEM Educational Toy, Electronic Building Robots Toy, Robotics Learning Kit, Logical Training Kit, DIY Robot Building Set for Kids Ages 6+
Regular price $95.10 USDRegular priceSale price $95.10 USD -
Honoson 20 Pcs Sanding Sticks Model, Low and High Grits, Groovy Style - style: Groovy Style
Regular price $16.58 USDRegular priceSale price $16.58 USD -
Digital Multimeter Voltmeter Battery Voltage Multi Tester Continuity Ohm Volt Amp DC AC Current Resistance Diodes 2000 Counts Electrical Test Meter with Leads Backlight LCD Display - color: Orange&Black
Regular price $19.89 USDRegular priceSale price $19.89 USD -
6 STEM Science Kits for Kids Age 8-12, Classroom Electric Fan Circuit Kit
Regular price $21.56 USDRegular priceSale price $21.56 USD
FAQ
What types of products does Stemora offer?
Stemora offers supplies for science experiments, microscopy, biology learning, measurement, laboratory organization, electronics, robotics, coding education, 3D printing, maker projects, and classroom activities. Available products and specifications may change over time.
Are Stemora products suitable for children?
Recommended ages vary by product. Please review the product description, manufacturer guidance, included warnings, and required skill level before purchasing. Products containing small parts, tools, electrical components, glass, or chemicals may not be suitable for young children.
Is adult supervision required?
Adult supervision is recommended for children and students, especially when using electrical components, sharp tools, heated equipment, glassware, small parts, or experiment materials. Customers are responsible for following all product instructions and safety precautions.
Can these products be used at home and in classrooms?
Many products may be suitable for classrooms, home learning, science projects, maker spaces, and hobby activities. Suitability depends on the specific product, learning environment, user experience, and intended activity.
How can I check what is included with a product?
Please review the product title, description, specifications, images, package quantity, and included-components section before ordering. Items shown for demonstration or scale in product images may not always be included.
How do I know whether an electronic or robotics part is compatible?
Check the listed dimensions, voltage, connector type, board compatibility, operating requirements, and supported platforms. Compatibility is not guaranteed unless it is specifically stated on the product page. Contact us before ordering if you need clarification.
When will I receive tracking information?
Tracking information is generally provided within 3–5 business days after an order is confirmed. In some cases, processing may take approximately 7–8 business days. Delivery may require an additional 4–5 business days after tracking becomes available, depending on the carrier and destination.
Why did my order arrive in separate packages?
Products in the same order may be shipped from different fulfillment locations. As a result, items may arrive separately and have different tracking numbers. You will not be charged additional shipping fees solely because an order is divided into multiple packages.
Can I change or cancel my order?
Contact us as soon as possible at vaioamaonaoak@gmail.com. We will try to assist, but changes or cancellations cannot be guaranteed once an order has entered processing or has been shipped.
What should I do if an item arrives damaged, defective, or incorrect?
Contact us promptly at vaioamaonaoak@gmail.com with your order number, a description of the issue, and clear photographs of the item, packaging, and shipping label. Please retain the product and original packaging while we review your request. Eligibility and available resolutions are subject to our Return & Refund Policy.
Blog posts
View all-
Arduino Wiring Errors: 7 Mistakes Beginners Mak...
Troubleshooting Arduino wiring errors becomes easier when you know where to look first. Learn how to identify common breadboard, power, polarity, grounding, and pin-assignment mistakes in beginner electronics projects
Arduino Wiring Errors: 7 Mistakes Beginners Mak...
Troubleshooting Arduino wiring errors becomes easier when you know where to look first. Learn how to identify common breadboard, power, polarity, grounding, and pin-assignment mistakes in beginner electronics projects
-
The Beginner’s Wiring Mistakes That Can Quietly...
Learn how to troubleshoot common Arduino wiring errors in beginner electronics projects. Discover practical breadboard, LED, sensor, power, and grounding checks that make STEM maker projects easier to debug.
The Beginner’s Wiring Mistakes That Can Quietly...
Learn how to troubleshoot common Arduino wiring errors in beginner electronics projects. Discover practical breadboard, LED, sensor, power, and grounding checks that make STEM maker projects easier to debug.
-
Arduino Wiring Errors: A Step-by-Step Guide to ...
Learn how to troubleshoot common Arduino wiring errors with a practical step-by-step process covering power, ground, breadboards, LEDs, sensors, signals, and testing. Build stronger electronics skills while turning circuit failures...
Arduino Wiring Errors: A Step-by-Step Guide to ...
Learn how to troubleshoot common Arduino wiring errors with a practical step-by-step process covering power, ground, breadboards, LEDs, sensors, signals, and testing. Build stronger electronics skills while turning circuit failures...















