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C-Thru Products, pioneered the manufacture of transparent plastic rulers in the USA in 1939. Their reputation as a cutting edge inovator and an international leader in the production of measurment impliments has been unparalleled. C-Thru has a committment to meticulous  quality, value-pricing and customer service.

  • C-Thru products are the best of their category available.
  • C-Thru's breath of product lines is unmatched
  • C-Thru is committed to value-pricing through low overheads and high use of technology.

$8.66
" data-url="/collections/c-thru/products/c-thru-grid-reader-plotter-gr-2-utm" data-title="C Thru Grid Reader Plotter Gr 2 Utm" data-details-text="View full details" data-full-description="<p style="font-size: 12px; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px;">Transparent, laminated scale with the following metric scales: 1:24,000 1:62,000 1:25,000 and 1:250,000 1:50,000 1:100,000, 1:150,000 and 1:63,360</p><ul style="font-family: Arial, Helvetica, sans-serif; font-size: 12px;"> <li style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif;">Laminated for durability.</li> <li style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif;">Also incorporates a full 360��_�� protractor.</li> </ul>" data-regular-description="Transparent, laminated scale with the following metric scales: 1:24,000 1:62,000 1:25,000 and 1:250,000 1:50,000 1:100,000, 1:150,000 and 1:63,360 Laminated for durability. Also incorporates a full..." data-images="28347272388 || C Thru Grid Reader Plotter Gr 2 Utm-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-s,products-u,stationary,stationary-drawing-utm-grids" > Quick View

$3.46
" data-url="/collections/c-thru/products/c-thru-protractor-ruler-plain-scale-w43" data-title="C Thru Protractor 15cm Ruler Plain Scale W43" data-details-text="View full details" data-full-description="<p><span style="color: rgb(51, 51, 51); font-family: Arial, Helvetica, sans-serif; font-size: 12px;">Transparent 180��_�� protractor ruler with 1:500 and 1:1000 metre scales. Laminated for durability.</span></p>" data-regular-description="Transparent 180��_�� protractor ruler with 1:500 and 1:1000 metre scales. Laminated for durability." data-images="28347277380 || C Thru Protractor 15cm Ruler Plain Scale W43-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View

$3.46
" data-url="/collections/c-thru/products/c-thru-protractor-ruler-w44" data-title="C Thru Protractor Ruler W44" data-details-text="View full details" data-full-description="<p><span style="color: rgb(51, 51, 51); font-family: Arial, Helvetica, sans-serif; font-size: 12px;">Transparent 180��_�� protractor with scales 1:250 metres. Laminated for durability. Size:15cm</span></p>" data-regular-description="Transparent 180��_�� protractor with scales 1:250 metres. Laminated for durability. :15cm" data-images="28347289476 || C Thru Protractor Ruler W44-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View

$7.80
" data-url="/collections/c-thru/products/c-thru-goniometer-go-180" data-title="C Thru Goniometer Go 180" data-details-text="View full details" data-full-description="<p style="font-size: 12px; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px;">Provides a quick method for accurate measurements of crystal specimens and solid angles.</p> <ul style="font-family: Arial, Helvetica, sans-serif; font-size: 12px;"> <li style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif;"> <p style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px; line-height: 18px;">2-piece protractor</p> </li> <li style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif;"> <p style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px; line-height: 18px;">Each piece measures 44 x 178mm</p> </li> <li style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif;"> <p style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px; line-height: 18px;">Features inch scale in sixteenths on one leg and metric scale on the other leg.</p> </li> </ul>" data-regular-description="Provides a quick method for accurate measurements of crystal specimens and solid angles. 2-piece protractor Each piece measures 44 x 178mm Features inch scale in..." data-images="28347271748 || C Thru Goniometer Go 180-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,tools-forestry,stationary-drawing-goniometers,tools-forestry-kenometer,newest-products,products-a-d,products-c,products-d,products-e-l,products-f-1,products-s,stationary" > Quick View


$9.10
" data-url="/collections/c-thru/products/c-thru-land-measure-compass-with-arm-a26a" data-title="C Thru Land Measure Compass with Arm A26a" data-details-text="View full details" data-full-description="<p style="font-size: 12px; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px;">Land measure compass with cursor arm enables you to lay out a property description.</p><ul style="font-family: Arial, Helvetica, sans-serif; font-size: 12px;"> <li style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif;">360��_�� divided into four 0-90��_�� quadrants.</li> <li style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif;">Plastic, 127mm diameter.</li> </ul>" data-regular-description="Land measure compass with cursor arm enables you to lay out a property description. 360��_�� divided into four 0-90��_�� quadrants. Plastic, 127mm diameter. " data-images="28347276036 || C Thru Land Measure Compass with Arm A26a-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View

$1.99
" data-url="/collections/c-thru/products/c-thru-protractor-ruler-plain-scale-w5" data-title="C Thru Protractor Ruler Plain Scale W5" data-details-text="View full details" data-full-description="<p><span style="color: rgb(51, 51, 51); font-family: Arial, Helvetica, sans-serif; font-size: 12px;">Transparent 180��_�� protractor ruler featuring 8ths graph, 16ths to the inch and centimetre scales. Laminated for durability. Size: 15cm.</span></p>" data-regular-description="Transparent 180��_�� protractor ruler featuring 8ths graph, 16ths to the inch and centimetre scales. Laminated for durability. : 15cm." data-images="28347279556 || C Thru Protractor Ruler Plain Scale W5-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View

$14.73
" data-url="/collections/c-thru/products/1500-12-300mm-c-thru-clear-folding-parallel-rule" data-title="1500 12 300mm C Thru Clear Folding Parallel Rule" data-details-text="View full details" data-full-description="<p style="font-size: 12px; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px;">Folding parallel rule available in transparent or opaque black plastic. Equipped with friction pads to prevent slipping when in use.</p><p style="font-size: 12px; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px;">All metal parts are corrosion resistant. Both sections of the rules are bevelled outwards.</p><ul style="font-family: Arial, Helvetica, sans-serif; font-size: 12px;"><li style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif;">300mm and 450mm black/transparent</li></ul>" data-regular-description="Folding parallel rule available in transparent or opaque black plastic. Equipped with friction pads to prevent slipping when in use.All metal parts are corrosion resistant...." data-images="28346879556 || 1500 12 300mm C Thru Clear Folding Parallel Rule-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,stationary-drawing-parallel-ruler,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary" > Quick View

$18.62
" data-url="/collections/c-thru/products/1500-18-450mm-c-thru-folding-parallel-rulel" data-title="1500-18 450mm C Thru Folding Parallel Rulel" data-details-text="View full details" data-full-description="<p style="font-size: 12px; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px;">Folding parallel rule available in transparent or opaque black plastic. Equipped with friction pads to prevent slipping when in use.</p><p style="font-size: 12px; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px;">All metal parts are corrosion resistant. Both sections of the rules are bevelled outwards.</p><ul style="font-family: Arial, Helvetica, sans-serif; font-size: 12px;"><li style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif;">300mm and 450mm black/transparent</li></ul>" data-regular-description="Folding parallel rule available in transparent or opaque black plastic. Equipped with friction pads to prevent slipping when in use.All metal parts are corrosion resistant...." data-images="28346881732 || 1500-18 450mm C Thru Folding Parallel Rulel-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,stationary-drawing-parallel-ruler,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary" > Quick View


$2.17
" data-url="/collections/c-thru/products/c-thru-compass-protractor-255-89-mm" data-title="C Thru Compass Protractor 255 89 Mm" data-details-text="View full details" data-full-description="<p style="font-size: 12px; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px;">Circular protractor used for map reading and other navigational purposes.</p><ul style="font-family: Arial, Helvetica, sans-serif; font-size: 12px;"><li style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif;">89mm diameter</li></ul>" data-regular-description="Circular protractor used for map reading and other navigational purposes.89mm diameter" data-images="28347269252 || C Thru Compass Protractor 255 89 Mm-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View

$8.66
" data-url="/collections/c-thru/products/c-thru-joint-plotter-gr-4-utm" data-title="C Thru Joint Plotter Gr 4 Utm" data-details-text="View full details" data-full-description="<p style="font-size: 12px; font-family: Arial, Helvetica, sans-serif; margin-top: 9px; margin-bottom: 9px;">Transparent laminated scale with metric scales: 1:24,000 1:25,000 1:50,000 1:62,500 1:100,000 1:250,000 1:50,000 TOPO, 1:250,000 jog 1:500,000 TPC 1:1,000.000 ONC and Millimetre Ruler. Also scaled in nautical miles.</p><ul style="font-family: Arial, Helvetica, sans-serif; font-size: 12px;"><li style="font-size: 9pt; font-family: Arial, Helvetica, sans-serif;">Incorporates a full 360��_�� protractor.</li></ul>" data-regular-description="Transparent laminated scale with metric scales: 1:24,000 1:25,000 1:50,000 1:62,500 1:100,000 1:250,000 1:50,000 TOPO, 1:250,000 jog 1:500,000 TPC 1:1,000.000 ONC and Millimetre Ruler. Also scaled..." data-images="28347274180 || C Thru Joint Plotter Gr 4 Utm-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-s,products-u,stationary,stationary-drawing-utm-grids" > Quick View

$1.99
" data-url="/collections/c-thru/products/c-thru-protractor-ruler-plain-scale-w8" data-title="C Thru Protractor Ruler Plain Scale W8" data-details-text="View full details" data-full-description="<p>Transparent engineering protractor ruler with centimetre and tenths to the inch graph scales. Laminated for durability. Size: 15cm</p>" data-regular-description="Transparent engineering protractor ruler with centimetre and tenths to the inch graph scales. Laminated for durability. : 15cm" data-images="28347280068 || C Thru Protractor Ruler Plain Scale W8-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View

$1.50
" data-url="/collections/c-thru/products/c-thru-protractor-ruler-sw51" data-title="C Thru Protractor Ruler Sw51" data-details-text="View full details" data-full-description="<p><span style="color: rgb(51, 51, 51); font-family: Arial, Helvetica, sans-serif; font-size: 12px;">Transparent 180��_�� protractor ruler with 45��_�� and 60��_�� triangle cut outs plus French curve symbol. Scales are in 16ths to the inch and centimetres. Laminated for durability.</span></p>" data-regular-description="Transparent 180��_�� protractor ruler with 45��_�� and 60��_�� triangle cut outs plus French curve symbol. Scales are in 16ths to the inch and centimetres. Laminated..." data-images="28347281156 || C Thru Protractor Ruler Sw51-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View


$1.35
" data-url="/collections/c-thru/products/c-thru-protractor-ruler-w36" data-title="C Thru Protractor Ruler W36" data-details-text="View full details" data-full-description="" data-regular-description="" data-images="28347283908 || C Thru Protractor Ruler W36-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View

$3.46
" data-url="/collections/c-thru/products/c-thru-protractor-ruler-w38" data-title="C Thru Protractor Ruler W38" data-details-text="View full details" data-full-description="" data-regular-description="" data-images="28347284804 || C Thru Protractor Ruler W38-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View

$3.46
" data-url="/collections/c-thru/products/c-thru-protractor-ruler-w40-discontinued-once-sold-out" data-title="C Thru Protractor Ruler W40 ** discontinued once sold out **" data-details-text="View full details" data-full-description="<p><span style="color: rgb(51, 51, 51); font-family: Arial, Helvetica, sans-serif; font-size: 12px;">Protractor Ruler 30ths/60ths, 15cm - Transparent 180��_�� protractor with a 30ths and 60ths to the inch scales. Laminated for durability.</span></p>" data-regular-description="Protractor Ruler 30ths/60ths, 15cm - Transparent 180��_�� protractor with a 30ths and 60ths to the inch scales. Laminated for durability." data-images="28347285508 || C Thru Protractor Ruler W40 ** discontinued once sold out **-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View

$3.46
" data-url="/collections/c-thru/products/c-thru-protractor-ruler-w42" data-title="C Thru Protractor Ruler W42" data-details-text="View full details" data-full-description="<p><span style="color: rgb(51, 51, 51); font-family: Arial, Helvetica, sans-serif; font-size: 12px;">Transparent 180��_�� protractor with a 32nds to the inch and centimetres divided into millimetres scales. Laminated for durability.</span></p>" data-regular-description="Transparent 180��_�� protractor with a 32nds to the inch and centimetres divided into millimetres scales. Laminated for durability." data-images="28347287556 || C Thru Protractor Ruler W42-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View


$3.46
" data-url="/collections/c-thru/products/c-thru-protractor-ruler-w45" data-title="C Thru Protractor Ruler W45" data-details-text="View full details" data-full-description="<p><span style="color: rgb(51, 51, 51); font-family: Arial, Helvetica, sans-serif; font-size: 12px;">Transparent 180��_�� protractor with scales 1:2000 and 1:1500 metres. Laminated for durability. Size: 15cm.</span></p>" data-regular-description="Transparent 180��_�� protractor with scales 1:2000 and 1:1500 metres. Laminated for durability. : 15cm." data-images="28347291268 || C Thru Protractor Ruler W45-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View

$2.50
" data-url="/collections/c-thru/products/c-thru-scale-w41" data-title="C Thru Scale W41" data-details-text="View full details" data-full-description="<p><span style="color: rgb(51, 51, 51); font-family: Arial, Helvetica, sans-serif; font-size: 12px;">Protractor Ruler, 15cm - Transparent 180��_�� protractor ruler includes scales of 1/8", 1/4", 1/2" to the inch, and 1 inch = one foot. Laminated for durability.</span></p>" data-regular-description="Protractor Ruler, 15cm - Transparent 180��_�� protractor ruler includes scales of 1/8", 1/4", 1/2" to the inch, and 1 inch = one foot. Laminated for..." data-images="28347293892 || C Thru Scale W41-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-m-r,products-p,products-s,stationary-drawing-protractors,stationary" > Quick View

$2.26
" data-url="/collections/c-thru/products/c-thru-standard-bevelled-ruler-b-50-bp" data-title="C Thru Standard Bevelled Ruler B 50 Bp" data-details-text="View full details" data-full-description="<p><span style="color: rgb(51, 51, 51); font-family: Arial, Helvetica, sans-serif; font-size: 12px;">A 1" x 6" hand graph ruler calibrated in six-tenths to the inch with bevelled edge to accommodate ink ruling.</span></p>" data-regular-description="A 1" x 6" hand graph ruler calibrated in six-tenths to the inch with bevelled edge to accommodate ink ruling." data-images="28347294916 || C Thru Standard Bevelled Ruler B 50 Bp-Normal-Prospectors ||" data-collection-handles="best-selling-products,c-thru,stationary-drawing,newest-products,products-a-d,products-c,products-d,products-s,stationary-drawing-rulers,scale-rules,stationary" > Quick View

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