Pencils are all marked on a European system called the degree scale where H is hardest and B is blackest.
Pencils can be marked as;
9H, 8H, 7H, 6H, 5H, 4H,3H,2H, H F,HB, B, 2B, 3B, 4B ,5B ,6B ,7B ,8B ,9B
H pencils have a higher concentrate of clay than graphite, whereas the B pencils have a much lower percentage of clay.
The B pencils make soft, dark marks, whereas the H pencils have a much harder, lighter mark.
The F pencil stands for fine point, which is slightly harder than the HB making it a good writingpencil.
Use a B, 2B, or darker grade of pencil for your shading. H and 2h pencils will give you less depth.
Numbers and letters on the sides of some pencils (Art & Drafting pencils) is used to signify the type of lead that it contains, or more specifically the hardness of that lead. The higher the number/letter combination, the harder the lead. Conversely, the lower the number/letter combination, the softer the lead. The typical pencil (#2 pencil) contains HB Grade lead. PencilPages.com notes (from The Pencil Hardness Test); "The hardest is a 9H, followed by 8H, 7H, 6H, 5H, 4H, 3H, 2H, and H. F is the middle of the hardness scale; then comes HB, B, 2B, 3B, 4B, 5B, 6B, 7B, 8B, and 9B, which is the softest. Another grading method uses numbers; the equivalents would be #1=B, #2=HB, #2-1/2=F, #3=H, and #4=2H." The H represents hardness and the B represents blackness.
Each graphite pencil, the 6H, 6B, 2H and 2B, will create a sharp line and fine detail. The difference is that the softer leads (2B, for example) will need to be sharpened more often to keep drawing this detailed. That is because, while having a sharp point when freshly sharpened, the softer the lead, the more quickly it will wear/crumble down.
The "lead" in drawing pencils has various grades or hardness. The hardness of a drawing pencil is designated by a number and an H. The higher the number the harder the pencil is, the slower it wears done, the longer it retains its point, the less it smudges and the lighter the line is that is drawn. For example, 6H pencils are harder than 2H pencils. The softness of a pencil is designated by a number and a B. The higher the number the softer the pencil is, the faster it wears down, the easier it is to smudge and blend, and the darker the line is that is drawn. For example 8B pencils are softer than 2B pencils. There is a standard, middle of the road pencil, the HB pencil, sometimes called the Number two pencil. This has some of the drawing qualities of both hard and soft pencils and in a pinch will serve for most drawing and writing needs.
here is a web site with a page on pencils www.easydrawinglessons.com
Use a B, 2B, or darker grade of pencil for your shading. H and 2h pencils will give you less depth.
Pencils are graded H (Hard) or B (Black). Hard pencils are best for fine lines (such as a draughtman might use), Black pencils are better for most types of drawing (and for shading in). An all purpose pencil is HB (just in the middle), but you can usually find H, 2H, 3H, 4H, B, 2B, 3B, 4B - and sometimes even higher numbers.
The order of hardness goes:9H 8H 7H 6H 5H 4H 3H 2H H F HB B 2B 3B 4B 5B 6B 7B 8B 9B hard medium soft
Suppose base and height are b and h. 2b+2h=44 (the perimeter includes two bases and two widths) b=2b-11 base is 11 less than two times base Subtract b from both sides: 0=2b-11-b, b-11=0, b=11 2b=22 2b+2h=44, 22+2h=44, 2h=44-22=22, h=11 So the rectangle is a square with side 11.
Drawing pencils are labeled by hardness and softness. For example - 6H is the hardest (makes the lightest mark), then 4H is a little less hard (makes a slightly darker mark), 2H,etc. HB is in the middle The it goes 2B, 4B, 6B, etc. - the higher number in the B's, the softer it is and the darker the mark it will make.
The hardest lead in drawing pencils is 2H or 4H.
Those categorised by how hard or soft they are. In order from hardest to softest, they range from 4H to 6B: 4H, 3H, 2H, H, F, HB, B, 2B, 3B, 4B, 5B and 6B. HB is in the middle and is usually the type non-artistic pencils come under. What pencil to use depends on what it is intended to be used for. For example, hard pencils (Hs), should be used to draw detailed elements of a piece, and softer pencils (Bs) for shading and less detailed elements.
Perimeter of a rectangle (P) = 2b+2h = 2*24+2h=114 48+2h=114 2h=66 h=33" Area of a rectangle (A) = b*h = 24*33= 1584 sq. in.
Yes, provided p = perimeter, b= breadth and h = height.
Numbers and letters on the sides of some pencils (Art & Drafting pencils) is used to signify the type of lead that it contains, or more specifically the hardness of that lead. The higher the number/letter combination, the harder the lead. Conversely, the lower the number/letter combination, the softer the lead. The typical pencil (#2 pencil) contains HB Grade lead. PencilPages.com notes (from The Pencil Hardness Test); "The hardest is a 9H, followed by 8H, 7H, 6H, 5H, 4H, 3H, 2H, and H. F is the middle of the hardness scale; then comes HB, B, 2B, 3B, 4B, 5B, 6B, 7B, 8B, and 9B, which is the softest. Another grading method uses numbers; the equivalents would be #1=B, #2=HB, #2-1/2=F, #3=H, and #4=2H." The H represents hardness and the B represents blackness.
Each graphite pencil, the 6H, 6B, 2H and 2B, will create a sharp line and fine detail. The difference is that the softer leads (2B, for example) will need to be sharpened more often to keep drawing this detailed. That is because, while having a sharp point when freshly sharpened, the softer the lead, the more quickly it will wear/crumble down.
It is a pencil gradation system. HB means hard black B means black and 2H means harder.H (2H, 4H, etc) are the harder leads, and therefore draw a lighter line; and B (2B, 4B, etc) are the softer leads, and therefore draw a darker line. HB is the very middle. The larger the number, the farther away from HB it is. So for instance, 6B will be darker than 2B, and 4H would be lighter than 2H.Read more: What_do_HB_B_2H_signs_in_pencils_mean