Papermate mechanical pencil 1.3mm full#
Papermate mechanical pencil 1.3mm Pc#

Most manufacturers offer far fewer grades.Īnother point of interest is the change from ceramic to polymer leads. For instance in 0.5mm Pentel offer 12 grades, but only 5 grades in 0.9mm. Other diameters have considerably less selection of brands and hardness’s. But thats variable, one manufacturer marks some of their HB pencils as #2 and some as #2 ½ !?Ġ.5mm and 0.7mm are unquestionably the most common lead diameters and have a wide range of hardness grades available. As a rough guide, for the USA, #1 = B, #2 = HB, #2 ½ = F, #3 = H and #4 = 2H. From the softest darkest through to the hardest lightest lead, the range is usually 6B up to B, then HB, F, and H up to 6H, but some manufactureres may go from about 9B through to 10H.

Slightly darker and softer is B, which is about #1. The standard writing grade is usually HB, which is about #2 in the USA. So HB grade is Hard Black, 6B is extremely soft and dark, 4H is very hard and light. The more H's in the designation the lighter (and harder) the lead, and the more B's the softer and darker. In the middle there is also an F (for Firm). Leads are often called #1, #2 etc in the USA, but most of the rest of the world uses the 'HB' system. There is no real standardisation of lead hardness or darkness. Confusing, but in general with these “variable” leads the differences don’t seem to matter as they are all the same thickness or the pencil mechanisms involved can handle the differences.

Faber-Castell lead refills are marked 1.0(0.9) and 0.35(0.3), but Pentel mark theirs the other way around, 0.3(0.35). For example my Rotring Tikky 1.0 takes a 0.9mm lead.

For example 0.3mm lead is usually 0.35mm just rounded down 1.1mm and 1.2mm are usually 1.18mm rounded down or up, but sometimes 1.1mm is really 1.1mm as distinct from 1.18mm. Many of them started out as imperial fractions of an inch so the metrication of them also produced rounding. One problem is that some sizes are frequently rounded up and/or down to another number, without any consistency, so you are sometimes unsure what diameter you really have. The lead in ordinary wood pencils is usually about 2mm = 0.0787 inches = a little under 1/12th inch. A common writing size is 0.5mm = 0.0197 inches = about 1/50th of an inch. Nowadays mechanical pencil lead diameters are all measured in metric. Lead sizes are designated by their diameter, in millimetres (mm).Ġ.3mm / 0.35mm (Usually the same thing, just rounded down to 0.3)Ġ.5mm (The common fine writing thickness)Ġ.7mm (Common writing thickness, stronger than 0.5)ġ.18mm / 1.1mm / 1.15mm / 1.2mm (Usually the same - a whole lot of different rounding values for the same stick of lead!) Standard Mechanical Pencil Lead Sizes (diameters) (Currently In Common Use) In some cases, the nature of the item means that it is non-returnable, for example, due to hygiene/health and personal care/wellness/consumable nature of the product.I have been prompted to publish this posting by people finding this blog with searches indicating they are looking for lists of lead diameters that are currently readily available, and some information on lead grades or hardness. Office Products and Wireless Returns Policy

Papermate mechanical pencil 1.3mm full#

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Papermate mechanical pencil 1.3mm Pc#

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