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A rule is used as a straight edge as much as a measure, which is why material matters. Stainless steel stays flat, resists corrosion and takes a knife edge against it without burring. Aluminium is lighter and easier to handle at length but marks more readily. A rule that has bowed is worse than useless, since it reads short and draws a curve.
Length runs 150mm and 6in through 300mm, 600mm and 1000mm, with aluminium reaching 1m. Longer rules are chosen for straight edge work as much as for measuring, since anything drawn or cut against a short rule has to be stepped along. Longer rules are also easier to hold flat against a workpiece than a short one being stepped along.
Folding rules solve the carrying problem rather than the measuring one. A 2m wood rule or a 1m plastic rule folds into a pocket and opens to a length no rigid rule of that size could be carried at. Aluminium rules run 152mm, 300mm, 600mm and 1m alongside the steel bodies. Folding rules are marked along each leaf so a measurement can be read without opening the whole rule.
Scale rules are a different instrument again, carrying several drawing scales on one triangular section so a plan can be read directly without calculating. Dual marked rules carry metric and imperial together. Send the work to 07754288583 on WhatsApp. Aluminium T squares are also held for marking across sheet material. Triangular scale rules carry several scales on one section rather than needing a rule per scale.
| Model No | AK9640 |
|---|---|
| Brand | Sealey |
| Length | 150mm/6" |
| Nett Weight | 0.019kg |
| Model No | AK9641 |
|---|---|
| Brand | Sealey |
| Length | 300mm/12" |
| Nett Weight | 0.06kg |
| Model No | AK9642 |
|---|---|
| Brand | Sealey |
| Length | 600mm/24" |
| Nett Weight | 0.09kg |
| Model No | AK9643 |
|---|---|
| Brand | Sealey |
| Length | 1000mm/40" |
| Nett Weight | 0.18kg |
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