MEM12006B
Mark off/out (general engineering)

This unit covers marking off/out by transferring dimensions from engineering drawings, prints or plans etc.

Application

This unit applies to marking off/out techniques used for the transfer of dimensions from engineering drawings, prints or plans.

Marking off/out is undertaken using appropriate tools and equipment; templates are produced as required. Marking off/out techniques may apply to a range of materials and shapes.

The task may be performed in a workshop or in situ.


Prerequisites

Path 1

MEM09002B Interpret technical drawing

MEM12023A Perform engineering measurements


Elements and Performance Criteria

Elements and Performance Criteria

Element

Performance Criteria

1

Determine job requirements

1.1

Drawings, job instructions and specifications are interpreted and understood.

1.2

Appropriate methods and sequencing are selected consistent with proposed manufacturing process using standard operating procedures.

2

Transfer dimension

2.1

All marking off/out is carried out to specifications using appropriate tools and equipment.

2.2

Datum points are correctly established.

2.3

Dimensions are transferred and correct and appropriate calculations are used where required.

Required Skills

Evidence Required

The evidence guide specifies the evidence required to demonstrate achievement in the unit of competency as a whole. It must be read in conjunction with the unit descriptor, performance criteria, range statement and the assessment guidelines for the Metal and Engineering Training Package

Overview of assessment requirements

A person who demonstrates competency in this unit must be able to mark off/out in a general engineering situation. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

Context of assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

Interdependent assessment

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with marking off/out in a general engineering situation or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Consistency of performance

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Required skills

Look for evidence that confirms skills in:

determining job requirements

transferring dimensions

applying method and sequence of marking out

making templates as required

establishing datum points

reading and interpreting routine information on written job instructions, specifications and standard operating procedures. May include drawings

performing calculations using formulae

locating, reading and interpreting information on written job instructions, specifications, drawings, charts, lists and other reference documentation

checking and clarifying strategies

Required knowledge

Look for evidence that confirms knowledge of:

drawings, job instructions and specifications

procedures for marking off/out

tools, equipment and techniques related to the task

purpose of establishing datum points

method of determining/calculating dimensions

use and application of personal protective equipment

safe work practices and procedures

relevant hazards and control measures related to the competency


Range Statement

The range statement provides information about the context in which the unit of competency is carried out. The variables and scope cater for different work requirements, work practices and knowledge between States, Territories and the Commonwealth, and between organisations and workplaces. The range statement relates to the unit as a whole and provides a focus for assessment. Text in italics in the performance criteria is explained here.

The following variables may be present and may include, but are not limited to, the examples listed under the scope. All work is undertaken to relevant legislative requirements, where applicable

Variable

Scope

Marking off/out

Engineering components, jigs and fixtures, castings, templates, dies and tooling etc.

Tools and equipment

Marking out tables, surface tables, rotary tables, dividing heads etc., vee blocks, cylinder squares, sine bars and the like, vernier height gauges, protractors, straight edge and set squares, hammers, scribers, centre punch, marking medium etc.


Sectors


Competency Field

Measurement