# What Is A List Of Symbols On A Drawing Called?

## What are GD&T symbols?

In geometric dimensioning and tolerancing (GD&T), a unique set of GD&T symbols are used to define the relationships between part features and measurement references..

## What are the 3 types of tolerances?

Three basic tolerances that occur most often on working drawings are: limit dimensions, unilateral, and bilateral tolerances. Three basic tolerances that occur most often on working drawings are: limit dimensions, unilateral, and bilateral tolerances.

## How many GD&T symbols are there?

fourteen GD&TGD&T Symbols There are a total of fourteen GD&T characteristics, and the symbols that represent them are shown in the symbol “cheat sheet” below. These symbols are placed in the first compartment of a feature control frame and define the type of tolerance that is to be applied to the feature.

## What does P mean in GD&T?

projected tolerance zone“P” stands for “projected tolerance zone.” This symbol indicates the tolerance applied to the protrusion of a feature.

## What are the 2 types of drawing?

Different Kinds of DrawingIllustration Drawing. These are drawings that are created to represent the lay-out of a particular document. … Life Drawing. Drawings that result from direct or real observations are life drawings. … Emotive Drawing. … Analytic Drawing. … Perspective Drawing. … Diagrammatic Drawing. … Geometric Drawing.

## What are the 4 basic components of an engineering drawing?

The main purpose of engineering drawings is to communicate to other engineers, machinists, etc….Dimensions have four basic components:Dimension Text.Dimension Line andArrows.Extension Lines.Gap.

## What is Ø in engineering?

In engineering drawings that symbol is used to denote diameter of circles in whatever the length unit of the drawing is (typically inches or mm) Form Wikipedia: Diameter symbol[edit ] http://en.wikipedia.org/wiki/File:Technical_Drawing_Hole_01.png. Sign ⌀ in a technical drawing.

## What is a pound sign called?

The symbol # is known as the number sign, hash, or (in North American usage) pound sign. The symbol has historically been used for a wide range of purposes, including the designation of an ordinal number and as a ligatured abbreviation for pounds avoirdupois – having been derived from the now-rare ℔.

## What is this symbol name?

Symbol< >Angle brackets’Apostrophe (heittomerkki)*Asterisk\Backslash15 more rows

## What are the common symbols for dimension?

Primary DimensionSymbolBG unitlengthL (sometimes l)ft (foot)timet (sometimes T)s (second)temperatureT (sometimes q )oR (degree Rankine)electric currentI (sometimes i)A (ampere)3 more rows

## What does STK mean on a drawing?

applicable toleranceIf not, then stock thicknesses dimensioned on face of drawing need to carry the word STOCK, or STK to cover the applicable tolerance.

## What is a () called?

are all called brackets. They indicate that the terms within any of them are considered as one quantity. () are called round brackets or parentheses, {} called curly brackets or braces and [] are the square brackets. … We use these brackets when we want to enclose part of an expression already within brackets.

## What are the <> symbols called?

Underscore: (sign/symbol) The ‘ _ ‘ sign/symbol is sometimes called an ‘understrike’ or ‘underdash’. But neither of these names are commonly used.

## What are drawing symbols?

Symbols are the shorthand of drawing. They graphically portray the characteristics of a component with a minimal amount of drawing.

## What are the symbols used in engineering drawing?

Engineering drawing abbreviations and symbolsAbbreviation or symbolDefinitionLDDlimited dimension drawingLHleft-handLM or L/Mlist of materialsLMCleast material condition144 more rows