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The Helix 300mm Metric Triangular Scale Ruler is a professional-grade drafting tool featuring 12 metric scales ranging from 1:1 to 1:2500, displayed on three color-coded faces for quick identification. Crafted from durable, lightweight plastic, it offers high-grade printed graduations and an ergonomic triangular design, making it ideal for architects, engineers, and students who demand precision and versatility in their measuring instruments.



| ASIN | B0027VSH32 |
| Best Sellers Rank | 6,792 in Stationery & Office Supplies ( See Top 100 in Stationery & Office Supplies ) 32 in Rulers (Stationery & Office Supplies) |
| Brand | Helix |
| Colour | Red |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,792) |
| Date First Available | 27 Feb. 2009 |
| Item Weight | 50 g |
| Material | Plastic |
| Model Number | K93070 |
| Product Dimensions | 39.8 x 6.2 x 2.01 cm; 50 g |
J**Y
Good quality scale rule
Good scale rule, markings are clearly marked, can't fault it
L**N
Great product
I studied architecture at undergrad and it is very useful for this, it has most of the scales we used bar maybe one which was easy enough to work out using the other scales. As a student i travelled a lot and as a clumsy person I dropped it a lot so I can say that for a plastic ruler it is very durable until if course you try using a scalpel with it... that did not end well for my 1:100 scale but it still worked for measuring, just not for drawing straight lines. I had a metal version which was better for cutting but not so great for everything else. This product is very light compared to it's metal opposition, even the aluminium sort. It also doesn't make a horrible clatter and clang when you drop it in the middle of a silent studio. So yeah, great buy, great price, I would 10/10 recommend.
C**S
Good product
Came in a nice crinkly paper package. The first feel of it was very plasticky as if there's maximum friction. Overtime, when it became slightly more oily from my hands, it became smoother. The corners do need to be sanded down though. Overall, it looks like a good tool. I'll be using it in my building Surveying course. So far I've just used to to trick my sister into thinking it changes colours.
M**S
Works well
Ruler works well for drawing scaled diagrams as part of a college course. Clwar and easy to use. Good value.
A**R
Multiple scales.
Just another tool in my technical drawing equipment. very helpful when working to scale.
A**R
Perfect scaleruler
Good scale ruler for the money
S**H
Easy to read markings
Does everything expected. Markings are clear and easy to read and the colour coding is helpful.
A**E
Excellent and good value for the money
What is really good about this ruler is that there are so many different scales to choose from on it so you do not need to buy multiply scale rulers. The fact that the ruler is triangular in shape makes the item easy to pick up off and move around the paper. Each triangular side has a central coloured line, red, blue and green for easy 'at a glance' reference as to what side you may need. If you want something light, easy to work with and not too worried if you lose it then this item is perfect (brought for £3.25)
M**O
non sono un architetto né geometra, ma mi piaceva e l'ho comprato; sono molto contento, va benissimo su scrivania, anche per tagliare a strappo i fogli
G**E
great product with a favorable price
A**A
Gut und günstig
A**A
Just as described. Thank you
H**S
gostei bastante
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