the smoothness of the surface basically. i.e. 1000 grit sandpaper would have 1000 particles of grit per cm or inch. 200 grit would be much rougher as the particals are bigger, as there are only 200 per unit of measurment. hope this helps
The simplest answer is that working to a standard means that anyone can read the drawing. If there is no standard the symbols used on the drawing (weld type and size, surface finish, even the dimensioning of the components) would vary from one drawing (or draughtsperson) to another and cause confusion. Engineering drawings use a large number of symbols to denote operations and instructions (which reduces the time taken to draw them and the size of "paper" they're drawn on). Imagine the potential problems if one person used a symbol to mean "weld" and another one used the same (or similar) symbol to mean "do not weld".
see link below
The abbreviation of Engg. means Engineering.
This means a scientific achievement, or hypothesis.
Flow Line
Drafting means actually drawing the drawing.
The simplest answer is that working to a standard means that anyone can read the drawing. If there is no standard the symbols used on the drawing (weld type and size, surface finish, even the dimensioning of the components) would vary from one drawing (or draughtsperson) to another and cause confusion. Engineering drawings use a large number of symbols to denote operations and instructions (which reduces the time taken to draw them and the size of "paper" they're drawn on). Imagine the potential problems if one person used a symbol to mean "weld" and another one used the same (or similar) symbol to mean "do not weld".
It means metal that has no surface finish such as paint, plating, or anodizing. Bare metal that is ready for a finish to be applied.
The surface is the ground upon which the medium is applied. If you are painting with oils, you are likely using stretched canvas or masonite board as a surface. If you are drawing in pastels, your surface may be Canson paper.
drawing on a computer
Do you mean a drawing "pen?"
Drawing a spade or club.
It means you can't look at it or you'll go catatonic Cute. Actually, it means that the entity that is being "referenced", usually a dimension, should NOT be inspected. It might be an overall length of the part. This might be a "cut length" for the machinist where the actual required dimension is shown elsewhere on the drawing.
micro means 10 to the -6 inches so for example 32 microinches would be 0.000032 inch. With respect to surface finish it is basically a measure of the height of the "peaks and valleys" of the finish of a surface. There are different ways to measure this (RMS, etc.) but that is basically what it means. So for example a 125 microinch finish is a typical machined fnish for metals but a 32 is much better and would be called out where sealing surfaces may be needed.
Engineering is the application of scientific knowledge for practical purposes
drawing
dibujo