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Best Choice Helix 
Helix K93X40 Triangular Scale Ruler, 30 cm The Helix 30cm triangular scale rule has 3 colour coded faces with markingsBest Value GALAMAX 
GALAMAX Architectural Scale Ruler, Aluminum Triangular Scale Ruler Standard Metric 1:20, 1:25, 1:50, 1:75, 1:100, 1:125, 【Premium Quality】New updated Triangular scale with chamfered edges, giving you a safety guarantee. Every design deservesEMSea 
EMSea Triangular Scale Ruler 30cm Black Aluminum Alloy Metric Ruler 1:20 1:25 1:50 1:75 1:100 1:150 for Architect Drafti [6 Metric Scales] : There are 3 sides with 6 scales, 1 : 20, 1 : 25, 1 : 50, 1 : 75, 1 : 100, 1 : 125, clear to read andWINTEX 
WINTEX Triangle Metal Scale Ruler - 30cm - Aluminium Architect & Design Metric Ruler for Architects or Engineers - 1:20, Durable Aluminium Metal Scale Ruler: The Wintex triangular ruler is made of strong and durable aluminium. As a result, tSTAEDTLER 
STAEDTLER 561 98-1BKST Triangular Triangular Din 1: 20, 25, 50, 75, 100, 125 Ruler Scale, (20497) A triangular reduction scale ruler with colour-coded groovesLexziuo 
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Every design deservesAlumicolor Alumicolor Aluminum Engineer Pocket Scale with Clip, 6IN, Black HIGH-QUALITY ALUMINUM POCKET SCALE - length of aluminum pocket scale is 6 InchesZDETGU ZDETGU Aluminum Triangular Scale Ruler 30cm Drafting Tool with 6 Scales for Architects Engineers Students Professional T Precision Measurement: This triangular scale ruler offers six scales including 1:100 and 1:500 for accurate drafting andAJKQNMA Ruler Triangular Scale for Architects, Matrix 30 cm Solid Aluminium Ruler: 1:100, 1:200, 1:250, 1:300, 1:400, 1:500 (Bla Premium quality: this technical triangle scale is made of anodised aluminium alloy, which is very solid and robust. 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These markings will never fade or scratch off.ALVIN Alvin 110PC 12" High Impact Plastic Architect Triangular Scale Easy to Use - Sharp, easy-to-read graduations resist wear, includes both English and metric measurements.WEDO Wedo 52 55002 30 cm Engineer’s Triangular Scale Engineer’s 30cm scaleTEHAUX TEHAUX Aluminium Alloy Triangular Scale Ruler with Numbers, Easy to Use Drawing Tool for Office and Home, for Teachers a Metal precision ruler--made of premium plastic material, and for long time use, which is suitable for measurement use,meZYIHNIRB ZYIHNIRB Triangular Scale Ruler for Engineering and Drafting Model triangular scale ruler for 1/12 1/24 /1/32 1/35 1/48 1/72.EXAOMBLE EXAOMBLE Aluminum Alloy Drawing Ruler 15Cm Black Triangular Scale Color-Coded Measurement for Students and Office Stationery ruler--with 3 different sides, precise scale and measuring coded, you are able to quickly select your desiredBreezeTrading BreezeTrading Professional Dedicated Rule of DE of Rule of Triangular Scale of 17 Cm Diy accessory for hobby craft models.Generic Generic 17cm Model Triangular Scale Ruler For1/12 1/24 /1/32 1/35 for any architect, draftsman, engineer, model makers fans,or student.