procedure on how to read precision machinist level?


There are several brands and lengths and accuracies of precision machinist levels available.

I own a Starrett No. 98
It is 12 inches long.
The accuracy is 0.005" per graduation mark.
The graduation marks represent 0.005 inches per mark, over the 12 inch length of the level.

There are six short graduated marks on each side of center on the level vial.
There is one longer mark centered between the six shorter marks.

If the end of the bubble is on the long mark, the level is level.

If the right end of the bubble is on the first short mark, to the right side of level, the level is
0.005 inches higher on the right hand end of the level.

If the right end of the bubble is on the second short mark, to the right of level, the level is 0.010 inches higher on the right hand end of the level.
And so on.

Starrett makes a more accurate and more expensive level that has an accuracy of 0.001 inches per graduation.

There should be information on the accuracy and graduations for your level, in the box the level is stored in.

If that information is not there, you can do a bench test using shim stock.
You will need shim stock sizes:
0.001"
0.005"

A level granite plate would be best to do this test on, but any work bench will do.
The bench will not be level.
Place your level on the work surface, orientated left to right.
Observe the bubble position.
If the bubble is to the right of center, place a 0.001" shim under the right end of the level.
Keep adding shims until the level reads level.

Reverse this process if the bubble is to the left of center.

Once you have the level leveled, add one 0.001" shim under one end of the level.
If the bubble moves to the first graduated mark, the level has an accuracy of 0.001" per the level length.

If you have to add 0.005" of shims to move the end of the bubble to the first graduated mark, your level has an accuracy od 0.005" per the level length.

As an example, using my level, I place it on the bed of a Mill.
The Mill bed is five feet long.
The right end of my bubble is in the first graduated mark past level.
That means the the bed is 0.005" out of level, in the length of the level.
The mill bed is high on the right end.
The level is 12"/ 1' long, the mill bed is 5' long.
5 times 0.005" = the mill bed is 0.025" out of level, high on the right end.

If you need more help, click my Avatar, go to my Activity Page and email me.
Open your email option on your Activity Page, you need to be able to communicate with people.

Ben

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The typical job of a Machinist involves using machines in the form of boring mills, grinders and lathes to grind or cut metals or other materials, so as to manufacture parts required for machinery and other mechanical systems.

Essential Skills in Machinist Jobs

1.Most Important Skill Sets – All machinists are required to possess innate skills in craftsmanship. In addition to this, a potential candidate must be able to pay keen attention to detail, must be able to understand how to read blueprints, charts and designs – and also must have the ability to work independently and pursue spatial reasoning as and when required. While most of these skills are innate, you can also pursue formal education to stream-line and realise them through vocational program at community colleges, technical schools; apprenticeship programs or on the job.

2.Skills Specific to Job Profile – Over and above this, machinist jobs also involve the inculcation of skills that are specific to the type of job you are seeing out. For example, the job of a Production machinist involves producing a single part in large amounts. In such cases, machinists are expected to spend long hours on a computer control programmer which aids them in how best to utilise the machine to create the part. With the help of these systems, the machinist is expect to design a cutting path, determine the speed of cutting and the rate of feed which can be fed into the machine through the computer control program. Consider the fact that the machinist is expected to oversee this entire job, and make sure that the machines are functioning effectively, he or she must not only be quite tech savvy – but also technically sound with respect to checking sounds, temperatures, speeds and assessment of the accuracy levels of cuts.

3.Skills the Facilitate Production Efficiency – As a production machinist, using Computer Numerically Controlled (CNC) Processes is a great expertise to possess.

With the knowledge to make changes to processes within this system if and when required will help ensure high levels of efficiency in production. Especially since most machinist jobs involve mass production, finding ways to manage manufacturing time, optimizing use of automated systems and tools wear is necessary.

As a machinist you must be able to manufacture large quantities of accurately cut machine parts in small amounts of times. In addition to this, you are also expected to be familiar with maintenance strategies which help repair old parts of existing machinery. It is here as well, that the machinist must be able follow blueprints and specifications provided when the original parts were manufactured.

Where to Find
Machinist Jobs

Job seekers can pursue engagement with manufacturing environments that focus on using machines of any kind or require machinists for maintenance work. With a large number of technical and vocational schools offering training programs for potential as well as existing machinists who wish to upgrade their skills, you can also enhance your prospects of getting hired by acquiring a certification from your State’s Apprenticeship board.

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