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The most widely used plastic ruler is
a clear, 12-inch (or 30 cm) plastic ruler
, often with markings in both inches and metric units on a lightweight, durable material like polystyrene. It is popular for its affordability, ease of use, and versatility, making it a common tool in schools, offices, and homes for tasks ranging from drawing straight lines to measuring fabric and paper.
Key features
- Material : Durable yet lightweight plastic, such as polystyrene or polypropylene.
- Size : The most common size is 12 inches (30 cm), though other lengths like 6 inches are also available.
- Markings : Clear markings in both inches and centimeters are printed in a contrasting color for easy readability. Some may have a grid pattern or beveled edges for increased precision.
- Design : Often made of transparent plastic, allowing the user to see what is underneath it. Many include a hole for hanging and a cork backing to prevent slippage.
- Affordability : Plastic rulers are a cost-effective measuring tool.
Common uses
- Education : A staple in classrooms for geometry, art, and general use.
- Offices : Used for measuring paper, drawing straight lines, and other administrative tasks.
- Home : Handy for a wide range of at-home activities, from sewing and crafting to general DIY projects.
- Design and art : Artists, designers, and architects use them for drawing and layout purposes.
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Amazon.com: 12 inches Plastic Ruler & 6 inch Straight ...
Amazon.com
https://www.amazon.com
› Plastic-Straight-Measuring-...
Amazon.com
https://www.amazon.com
› Plastic-Straight-Measuring-...
The minimum accuracy is 0.1 cm and 1/ 16 inch. 【
Widely Used
】:Common size
ruler
can be applied in school, home, library, study room, office etc.Perfect ...
People also ask
How accurate are plastic rulers?
Most of the CSPRs meet both the tolerances, and nearly all meet the second tolerance (0.8 mm , 1/32 inch) standard quite easily
. Note particularly the Stratton Ruler, marked "S" in the figure.
Length Metrology of Complimentary Small Plastic Rulers
Engineering Metrology Toolbox - National Institute of Standards and Technology
https://emtoolbox.nist.gov
› MSCProceedings94
Engineering Metrology Toolbox - National Institute of Standards and Technology
https://emtoolbox.nist.gov
› MSCProceedings94
Why is plastic used for rulers?
Plastic rulers are perhaps the most common, and come in a variety of different colours and sizes. They are
durable but lightweight, easy to transport, and perfect for use in things like pencil cases and rucksacks
. This makes them ideal for use in school or college, as well as in an office environment.
May 23, 2025
Plastic vs. Metal Rulers: Which One is Best for You
The Ruler Company
https://www.rulerco.co.uk
› plastic-vs-metal-rulers-guide
The Ruler Company
https://www.rulerco.co.uk
› plastic-vs-metal-rulers-guide
Does a plastic ruler sink or float?
If we drop the plastic ruler,
it will also float because of its less weight
. If we drop a steel spoon, it will also float on the water. But if we drop the potato it will sink in the water because of greater weight then the pencil, ruler, and spoon.
Oct 7, 2020
1) Take a bucket of water. Drop a pencil, a plastic ruler, steel spoon, a ...
Brainly.in
https://brainly.in
› question
Brainly.in
https://brainly.in
› question
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Recycled Plastic Rulers - 12
Recycling Promotions
https://www.recyclingpromotions.us
› recycled-plastic-ru...
Recycling Promotions
https://www.recyclingpromotions.us
› recycled-plastic-ru...
Dark Green is 95% Post-Industrial Recycled Polystyrene
! All Other Colors are Made of Polystyrene! Includes Inches and Metric Measurements!
$0.99
Missing:
Widely
Used
12″ Recycled Plastic Ruler
Culver Company
https://culverco.com
› Electrical Safety
Culver Company
https://culverco.com
› Electrical Safety
These 12″ rulers are
made of 100 percent recycled plastic
. The large imprint area really stands out with your name, logo, website, and contact information—or a ...
Popular products
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Westcott Non-Shatter Ruler$1.70Walmart & more(37)
Westcott Non-Shatter Ruler$1.70Walmart & more(37) -
Office Depot Acrylic Ruler 12in Clear 55234$3.19Office Depot & more(44)
Office Depot Acrylic Ruler 12in Clear 55234$3.19Office Depot & more(44)
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Blick Plastic Ruler$1.31Blick Art MaterialsFree delivery on $69+(5)
Blick Plastic Ruler$1.31Blick Art MaterialsFree delivery on $69+(5)So far none have broken and since they are plastic they don't get the kinks in them like the metal rulers.A reviewer on dickblick.com
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LOW PRICEWestcott Clear Flexible Acrylic Ruler$2.46 Usually $3Sam's Club & more(109)LOW PRICE
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Universal Clear Plastic Ruler$0.86WebstaurantStore.com & more(58)
Universal Clear Plastic Ruler$0.86WebstaurantStore.com & more(58)
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Westcott 12" English and Metric Plastic Ruler$2.98kamo.com & more(451)
Westcott 12" English and Metric Plastic Ruler$2.98kamo.com & more(451)
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Westcott Shatterproof Ruler$1.79Office Depot & more(218)
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Maped Unbreakable Ruler 12" / 30cm (Pack of 20)$1.38Blick Art Materials & moreFree delivery on $69+
Maped Unbreakable Ruler 12" / 30cm (Pack of 20)$1.38Blick Art Materials & moreFree delivery on $69+
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Staples 12" Shatterproof Plastic Ruler$3.89Staples & moreFree delivery on $35+(61)
Staples 12" Shatterproof Plastic Ruler$3.89Staples & moreFree delivery on $35+(61)
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Generic Clear Plastic Ruler$4.59DEMCO
Generic Clear Plastic Ruler$4.59DEMCO
Plastic Rulers – Lance Rulers - Precision Measuring Tools
Lance Rulers
https://lancerulers.com
› collections › plastic-rulers
Lance Rulers
https://lancerulers.com
› collections › plastic-rulers
Plastic rulers are widely used in schools, offices, and homes
because they are affordable, easy to use, and come in a variety of colors, sizes, and shapes.
Beveled Plastic Ruler - 1" x 6"
WAWAK
https://www.wawak.com
› clearance › beveled-plastic-r...
WAWAK
https://www.wawak.com
› clearance › beveled-plastic-r...
Shop for Beveled Rulers.
Light-weight, clear and transparent ruler with a grid pattern
. Zero centering scale included. Available in a variety of sizes.
$3.11
Free delivery over $99
Free 90-day returns
Plastic Rulers
Staples.com
https://www.staples.com
› plastic-rulers › cat_CL10503
Staples.com
https://www.staples.com
› plastic-rulers › cat_CL10503
The range of
plastic rulers
and measuring devices available
is
vast, catering to different needs and tasks. From simple 12-inch school rulers ...
store rating
(
313
)
2-day delivery
More products
-
Business Source 12" Plastic Ruler$0.66Stone's & moreFree delivery on $100+(10)
Business Source 12" Plastic Ruler$0.66Stone's & moreFree delivery on $100+(10)Can't go wrong with this one.A reviewer on wayfair.ca
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Westcott See Through Acrylic Ruler$5.29Office Depot & more(92)
Westcott See Through Acrylic Ruler$5.29Office Depot & more(92)
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Excelta RU-1 Straight Plastic Ruler$0.73MTE Solutions & more
Excelta RU-1 Straight Plastic Ruler$0.73MTE Solutions & moreSmall business
-
Handy Ruler$1.05Rainbow Resource Center & moreFree delivery on $50+(1)
Handy Ruler$1.05Rainbow Resource Center & moreFree delivery on $50+(1)These rulers are ``handy'' for holding on to while drawing straight lines because of the raised plastic piece in the middle.A reviewer on rainbowresource.com
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51% OFFWestcott Plastic Ruler$0.86 $1.77OfficeCrave.com & more(71)51% OFF
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Plastic Ruler 12" Zero Centering$6.99CraftFancy & moreFree delivery on $75+(10)
Plastic Ruler 12" Zero Centering$6.99CraftFancy & moreFree delivery on $75+(10)Love this centering ruler to center items on my scrapbook layouts.A reviewer on acherryontop.com
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EAI Education 12" ShatterProof Ruler Set of 10$5.95EAI Education & moreFree delivery on $99+
EAI Education 12" ShatterProof Ruler Set of 10$5.95EAI Education & moreFree delivery on $99+
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Plastic Ruler for Classroom Use$1.75Pitsco Education
Plastic Ruler for Classroom Use$1.75Pitsco Education
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Pacific Arc Pacific Arc Clear Plastic Ruler 12$1.50risd:store & more
Pacific Arc Pacific Arc Clear Plastic Ruler 12$1.50risd:store & more
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Two Sided Plastic Rulers - 10 Packs - 18cm$9.75Oregon Rule
Two Sided Plastic Rulers - 10 Packs - 18cm$9.75Oregon Rule
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20% OFFCharles Leonard 12" Plastic Ruler$27.99 $35Michaels Stores & moreFree delivery on $50+(5)20% OFF
Charles Leonard 12" Plastic Ruler$27.99 $35Michaels Stores & moreFree delivery on $50+(5)
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58% OFFUniversal Clear Plastic Ruler$0.82 $1.97Teaching & Learning Stuff & moreFree delivery on $89+(58)58% OFF
Universal Clear Plastic Ruler$0.82 $1.97Teaching & Learning Stuff & moreFree delivery on $89+(58)
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77% OFFWestcott Shatter-Resistant Plastic Ruler$1.33 $5.80OfficeCrave.com & more(75)77% OFF
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49% OFFWestcott Shatterproof Ruler$1.78 $3.55OfficeCrave.com & more(218)49% OFF
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LOW PRICEOffice Depot Plastic Ruler 12" Assorted Colors (No Color Choice)$1.59 Usually $3Stones Ace of & more(36)LOW PRICE
Office Depot Plastic Ruler 12" Assorted Colors (No Color Choice)$1.59 Usually $3Stones Ace of & moreSmall business(36)
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49% OFFWestcott See Through Acrylic Ruler$3.76 $7.46OfficeCrave.com & more(92)49% OFF
Westcott See Through Acrylic Ruler$3.76 $7.46OfficeCrave.com & more(92)
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LOW PRICEWestcott Non-Shatter Ruler$3.62 Usually $6Midwest Technology Products & more(37)LOW PRICE
Westcott Non-Shatter Ruler$3.62 Usually $6Midwest Technology Products & more(37)
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LOW PRICE12" Ruler Set of 100 in Tub$38.00 Usually $47EAI EducationFree delivery on $99+LOW PRICE
12" Ruler Set of 100 in Tub$38.00 Usually $47EAI EducationFree delivery on $99+
Widely Used Plastic Ruler
Anhui Sunshine Stationery Co.,Ltd.
https://www.chinasunshine.com
› widely-used-plastic-ruler
Anhui Sunshine Stationery Co.,Ltd.
https://www.chinasunshine.com
› widely-used-plastic-ruler
Foska Plastic Flexible Ruler
- Featuring double-sided measurements in both centimeters and inches, the Foska Clear Acrylic Ruler enables you to effortlessly ...
Westcott C-Thru Plastic Rulers
Utrecht Art Supplies
https://www.utrechtart.com
› ... › Drafting Supplies
Utrecht Art Supplies
https://www.utrechtart.com
› ... › Drafting Supplies
Westcott C-Thru Plastic Rulers
is clear for visibility and beveled to accommodate work with ink. It's made from laminated clear plastic that makes it easy ...
12-in. Recycled Plastic Rulers
Totally Promotional
https://www.totallypromotional.com
› ... › Rulers
Totally Promotional
https://www.totallypromotional.com
› ... › Rulers
Choose these
12-in. Recycled Plastic Rulers
for your marketing needs! They have bright color options and are made in the USA of recycled polystyrene.
$337.50
with code
In stock
$104.94 delivery
40-day returns
ENJOY10
(
Copy
)
ENJOY10
Westcott Plastic Ruler
LD Products
https://www.ldproducts.com
› offsup-westcott-acm10526...
LD Products
https://www.ldproducts.com
› offsup-westcott-acm10526...
The 12" ruler has 1/16" imperial and metric markings, is
made of scratch-resistant plastic
, and has beveled edges and extra margins.
$1.18
In stock
(1)
Free delivery over $50
Lifetime returns
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