1.2-Lettering in Engineering Drawing: English Letters and Numbers 

Lettering is part of standard and must be followed.👍

@@1styearengineeringdrawing182 ok thanks

I Know Right!! i think it's a total waste of time

Where an artist puts their themself into their work (their style, their feelings, their thoughts), in technical writing and drawing the objective is to remove yourself from the work, hence standardisation (in addition to basic expectations of legibility)

@@grant5603 okay got it

Appreciate your comment. 👍

Things change. Cope.

My background is similar to the first person who commented, but I started out with an Industrial Technology Degree. I begain the program with a Concentration in Drafting Design, I found out that it overlaps with a Concentration in Manufacturing Technology, with a few additional courses and finally perused an emphasis in Basic Engineering Technology-Mechanical Design with several electronics tech. electives courses. Most recently, I've had taken courses in Linear Algebra, Gen. Engineering, Metallurgy, Electronics, Aeronautics, Astronautics, Mechanical Design & Mechatronics. I once worked with a guy on a helicopter project about 14 yrs ago, who left us and went to work for Bechtel in Huntsville, AL. We had worked together several times prior for Boeing on a flight simulator & 10 yrs. later on the International Space Station program . I have worked for several well known companies in the rubber, paper, & rail transet car industries, Dunlop Tire & Rubber, Proctor & Gamble and Morrison-Knudsen. I have also worked for minor & major aerospace companies like SCI Systems, GE Aerospace, Boeing, Morton-Thiokol, Pemco- Aeroplex, Piper Aircraft, McDonnell Douglas, Delta Airlines, Westwind Technologies, Booz Allen Hamilton & Yulista Aviation. I am a semi-retired design engineer with over 44 yrs. of experience & training. What you said is true. I was told in my first college drafting class that "lettering was a draftsperson's calling card". I meet other old timers like us, who take pride in our lettering skills. My brother, a retired robotics tech. and welding fixture repairman for Ford once asked me if my wife and I could write in cursive? He thought we printed like his children did started they started school! I explain that we had drafting training many years ago and still write like that, because it's clearer & requires less guessing or misinterpretations. Some non-drafting trained individuals like him, have handwriting that is incomprehensible. It was not called "printing", but is called "lettering". I read somewhere that cursive writing wasn't being emphasized in schools like it was when we attended. I guess my brother had read that too. I started working on the drafting board in 1980. My college didn't have CAD, at that time. I learned AutoCAD at work two years later, on my second job. Several jobs I took after this were actually back on the drafting board. Some of the places I worked had Mentor Graphics, Anvil, & Unigraphics II CAD, but only a few CAD workstations, so I was still working on the drafting board for a few more years. I told my new lead person that I had CAD training and experience when I picked up a CAD work package, rather than a drafting board work package at work one day. I didn't know how to use ComputerVision CV4x, but I learned on the job by asking questions & reading manuals. Years later, my wife & I enrolled in a local technical college that taught two classes in MicroStation, 2D & 3D, taught by Intergraph personnel. My wife also took a different Intergraph CAD package course at a 4-yr. college up the street from the 2-yr. tech. college she later got her AS in Drafting from. Later we took a C++ programming course together at this same tech. college. They proctored some of my 4-yr. univ. distance engineering courses I took at the same time that we attended the 2-yr. tech.college. I was hired to use Intergraph EMS CAD on mini-computers & learned to use Unix on the job too. Intergraph once controlled Bently Systems and MicroStation. They once had a lot of similarity in their commands. I discovered from coworkers, that my desktop PC, not the mini-computer, could "piggy-back" with their legacy Unigraphics II CAD server. I bought a book and learned UGII Ver.15. or 16 at lunch & got tips from my new friends there. Later, I was hired to use AutoCAD at Delta Airlines. I found out that the PC on the next desk, which was vacant, had SDRC-I/deas recently installed. SDRC-I/deas had been used for stress analysis at my previous job & was highly recommended by our British stress analysts. I bought a book on it & stayed to learn SDRC- I/deas at lunch. When I got back home after this short term job ended, I enrolled in the first of two SDRC-I/deas classes that I took at another community college. The company I worked for headquarters was also the community college's CAD learning lab. site! About this time, our son was in high school. We persuaded him to take drafting & engineering courses along with his art & graphic design classes. He had access to Autodesk Inventor at school. We got a book on Inventor with a demo version of Inventor & I learned it along side my son. A year or two later, I signed up for a CATIA V5 class online. My son could get access to a student version for a year for a cheap amount. I had been taught SolidWorks Essentials during a weeklong seminar, paid for by my then employer. They had hesitated on deploying new seats of the software, because a senior engineer who worked there felt that AutoCAD LT was good enough for our work and said that he hated the Pro-E class the company made him enroll in years before. We all got new AutoCAD LT seats. Our SolidWorks User Group, was lead by a former SolidWorks Reseller Applications Engineer and I learned to use the software at lunch on my own. Soon I was teaching another co-worker. The company finally sent me for formal training. They missed out on an important aircraft contract. I was one of their few employees with actual aircraft experience. A few months later, I went to work for one of the contract's winners. I was hired to use AutoCAD by the new company. But they also had SolidWorks & Pro-E work. I learned more SolidWorks on that job, from the User Group meetings, and from helpful co-workers. While there, I got my son to sign up for student access to Pro-E. A Pro-E user at work stayed around at lunch to give me pointers on the software & links to some usedful websites. They started letting me do some simple detail part work on a high level project with Pro-E. Then it was back on SolidWorks for a top level project for a different team. The majority of my CAD work has been on SolidWorks, but I still use "quick hand sketching" and traditional drafting tools to clean up a concept sketch & for scale measurements on drawings on stable like mylar. Then I used CAD for assemblies & part detailing. It's like your first language, it is still there, after you have learned to speak in another one. I'm not sure if this applies world wide, but the Institution for Engineering and Technology in the UK said that "up to 30% of engineers are dyslexic". I have worked for an Engineering Director & an Engineering Lead at different aerospace companies, who were both dyslexic. However, they were both very good at stress analysis and systems engineering, but poor to average on creating models & drawings! I had another ex-boss, I was assigned to train at a different company on SolidWorks. He had shown me several patents that were issued to him at other companies, one was from Chrysler, when he worked for them. His CAD skills were below par. They all were highly respected & bright guys. Our checker even asked the Lead Engineer about an incorrect drawing view? The Lead replied, yes that he was dyslexic. Dyslexia could explain problems with lettering as well as difficulty with visualization.

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Yes, of course. Thanks!👍

Always multiply the height with 0.83 to obtain the width of the letter. However, this will not apply to the letter "I".

@@1styearengineeringdrawing182 thanks you so much sir

Please let me know where in this video, at what time?

Please use the table for any calculation, it is given in the video. For lettering, you do not have to be greatly precise. Follow the dimensions approximately as much as possible. Make sure the height and width are right.

The boxes were made for practicing each letter. With fair amount of practice, you should be able to write letters following the dimensional rules without having to make the boxes. Please let me know if I did not get your question correctly.✔👍

Please check at 6:24 and 6:37 of the video for the Roman script N. Ñ which is used in Spanish, Portuguese or Filipino languages is not taught in Engineering Drawing in other countries. The tilde or superscription can be written just above N or n as you do when writing in text. Someone from Spain or Portugal might be able to help us in this. Thanks for asking👍

Thanks for asking!✔ These are two styles in which the letters can be written. They define the ratios of the height of the letter to the thickness of the line used to write the letters. For type A, the ratio of h/d is 14 which means this style of letters would look little thinner than type B letters for which the ratio is 10. Other dimensions also differ between the two types. It might be fine to follow either of these types so that you get used to one type and not bother about the other. 👍

Initial some practice necessary. But will need two parallel lines with separation distance equal to the letter height you want.

Standard for numbers are not given. Partially you can follow the same dimension ratios as for English letters. Keep in mind the clarity of the written number.👍

Your question is answered at time 1:37. It will be 8.3 mm. 👍

@@1styearengineeringdrawing182 we can't be that accurate right

@@lokesh5649p You are right. Practice can help.

11.4 mm

You're welcome 😊

Please see the table at 2:25 minutes. For letters of height 5 or 7 mm, the spacing between words are minimum 2.1 or 3 mm, respectively. The spacing can be slightly more depending upon the need for a good lettering.

Thanks for the comment!👍

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You are right 👍

Lettering is just part of engineering drawing. Without learning lettering, engineering drawing will be unclear.

I have a degree in Electrical-Mechanical Engineering Drafting/Design. I worked for Bechtel Power Corp for 50 years as a engineering drafter-designer. At the time CADD didn't exist and everything was done 'on the ( drafting) board' with physical equipment by hand. In school we studied and practiced engineering lettering for several hours the first semester. It was part of the curriculum and graded as such. When applying for a job, one of things they evaluated you on was your lettering. The foundation of engineering lettering is a block letter. All of the elements of the letter, either straight or curved, are contained within a square block. The concept of the standardized lettering is for all drafters to produce all drawings with lettering that is identical. It is standardized like typewriter lettering so all drawings are consistent. After the original drawing is made, there may well be revisions made to it. The lettering must be consistent throughout the drawing whether it is the original or part of the revision. It is especially important if one or more other drafters does the revision work. Unlike architecture lettering where it is very individualized and personality driven, engineering lettering must all look the same regardless of who works on the drawing. Unfortunately today, with CADD being used, the concept and skill of lettering has gone out of use. After all those years of the skill and experience I still print this way. Many times people comment and complement me on my 'writing'. It is clear and easy to read. I tell them I was and am an old time drafter skilled in the ways of lettering.

skill issue

Normal drawing sheets (A2 size). You can practice on A3 size sketching papers but final lettering is done along with the technical drawing on the drawing sheet.👍

For height measurement you need rolling ruler (two parallel lines). Width can be practiced before hand.✔👍

@@1styearengineeringdrawing182 do engineering students actually have to study lettering seriously? cuz CAD exists

@@HarshRajAlwaysfree CAD is used for final copy. You still need to draw your ideas onto a paper and discuss with various stakeholders. Lettering, once learnt, will remain with you for life.👍

see at 2:46 time in the table. Third row is the spacing between characters, a. See also at 3:07 time. Thanks👍

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Any engineering drawing will have some information written on it and that must be written in the method described in lettering. Even for computer print out, you need to know the lettering styles so that you can correct in case your computer is printing wrong way.✔👍

Good question

I have a degree in Electrical-Mechanical Engineering Drafting/Design. I worked for Bechtel Power Corp for 50 years as a engineering drafter-designer. At the time CADD didn't exist and everything was done 'on the ( drafting) board' with physical equipment by hand. In school we studied and practiced engineering lettering for several hours the first semester. It was part of the curriculum and graded as such. When applying for a job, one of things they evaluated you on was your lettering. The foundation of engineering lettering is a block letter. All of the elements of the letter, either straight or curved, are contained within a square block. The concept of the standardized lettering is for all drafters to produce all drawings with lettering that is identical. It is standardized like typewriter lettering so all drawings are consistent. After the original drawing is made, there may well be revisions made to it. The lettering must be consistent throughout the drawing whether it is the original or part of the revision. It is especially important if one or more other drafters does the revision work. Unlike architecture lettering where it is very individualized and personality driven, engineering lettering must all look the same regardless of who works on the drawing. Unfortunately today, with CADD being used, the concept and skill of lettering has gone out of use. After all those years of the skill and experience I still print this way. Many times people comment and complement me on my 'writing'. It is clear and easy to read. I tell them I was and am an old time drafter skilled in the ways of lettering.

Welcome👍

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Divide the width by 0.83 to obtain height.

@@1styearengineeringdrawing182 tqq

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I appreciate your comment and you are right. I have added one correction in the description of the video. 👍

Multiply the height with 0.83. So it is 5.81; roughly 6 would be fine.

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You are welcome👍

Hi

@@INDIANBABYDOGEMILLIONER Hi

Lettering style A or B defines two different ratios of the height of the letter to the thickness of the line or h/d ratio. For style A, this ratio is 14 compared with style B for which the ratio is 10. This basically means that Style A has line thickness lower than style B for the same height of the letter. Other dimensions will also change but marginally (please see in the table given in any textbook or technical standards). My suggestion is that you can stick to one way and that should be fine. I prefer thinner lines and hence style A. Thanks for asking! 👍

@@1styearengineeringdrawing182 nice explanation

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No, but it can be used. Rolling ruler has helped to draw.

Thanks✔

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You can find it on the internet.

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Multiply the height with 0.83. So it is 5.81; roughly 6 would be fine.👍

Width is about 83% of the height. So it is 5.8 mm.

Thanks for asking. It is explained at time 1:31 in this video.

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English only, sorry?👍

@@1styearengineeringdrawing182 ok

Here,any malayalees?

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Thanks! Next time.✔

Could you please clarify your question?👍

@@1styearengineeringdrawing182 i am sorry for the typo. may i know what kind of ruler is that?

It is called rolling ruler. You can watch this video of mine: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-aCwWls0exVw.html

@@1styearengineeringdrawing182 thank you so much, i hope i could find this one in my country, this would be a big help. i am so desperate : (

@@dumbforsure You could buy on Amazon. It is available in India. I could pass on your contact to the sellers here.