Elements and Performance Criteria

RANGE STATEMENT
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.
High-grade mechanical watch characteristics
High-grade mechanical watch characteristics may include:
finish of components (e.g. bevelling, graining or level of polish)
type of materials used for movement and case construction (e.g. non-magnetic alloys and precious metals)
quality of components used (e.g. balance spring, escapement and balance wheel)
certification chronometer
brand name
number of jewels
Record and document repair
Record and document repair may include:
date and extent of repair
cost of replacement part
time spent on procedure
Performance analysis
Performance analysis may include:
watch subjected to various testing positions (e.g. dial up, dial down, crown up, crown down, crown right and left)
states of winding (e.g. partly wound, half wound and fully wound)
temperature variation
factors affecting isochronism (e.g. equal time of vibration)
Oscillator and balance spring condition
Oscillator and balance spring condition may include:
static poise of balance wheel
balance spring condition (e.g. concentric, flatness and beating evenly between curb pins)
Dynamic poising
Dynamic poising may include:
set up and determine out-of-poise/balance wheel using a timing machine (e.g. amplitude <180 degrees)
identify and locate point of adjustment
methods of adjustment (e.g. cutters and milling tools)
Confirm all adjustments
Confirm all adjustments may include:
ensure required accuracy is obtained and timekeeping is in accordance with manufacturer specifications (e.g. chronometer certified rating +/- 4 to 5 seconds per day)
Watch performance and rate testing
Watch performance and rate testing may include:
in-beat
rate adjustment
amplitude
effect or influence of escapement
temperature
effect of positional errors (e.g. isochronism)
effect of balance wheel poise
effect of balance spring
states of winding
Longitudinal testing
Longitudinal testing may include:
testing over extended time period by wearing or simulator machine (e.g. cyclomat)
Hand tools and equipment
Hand tools and equipment may include:
mehanical watch timing machine
poising tools
balance wheel cutters
case opening and closing tools
Working environment
Working environment may include:
clean bench and working area
adequate lighting and ventilation
tools and equipment organised and in good condition
ergonomic seating
Clean and safe work environment
Clean and safe work environment may be specified through:
relevant legislation and regulations
enterprise operating procedures
5S housekeeping related principles and procedures (e.g. sort, straighten, shine, standardise, sustain)

EVIDENCE GUIDE
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.
Overview of assessment
A person who demonstrates competency in this unit must be able to adjust high-grade mechanical watches to achieve chronometer timekeeping to industry standards, manufacturer specifications and in accordance with safety regulations and procedures.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
Assessors must be satisfied that the candidate can competently and consistently:
service high-grade mechanical watches to achieve original manufacturer timekeeping standards and specifications
conduct watch performance testing (e.g. chronometer rating)
analyse and interpret results of watch performance testing
adjust and rectify errors in watch oscillating system to achieve precision timing and chronometer performance +/- 4 to 5 seconds per/day.
Context of and specific resources for assessment
Assessment may occur on the job or in an appropriately simulated environment. Access is required to real or appropriately simulated situations, including work areas, materials and equipment, and information on workplace practices and OHS practices.
Where applicable, reasonable adjustment must be made to work environments and training situations to accommodate ethnicity, age, gender, demographics and disability.
Access must be provided to appropriate learning and/or assessment support when required. Where applicable, physical resources should include equipment modified for people with disabilities.
Method of assessment
Assessment must satisfy the endorsed Assessment Guidelines of the MEM05 Metal and Engineering Training Package.
Assessment methods must confirm consistency and accuracy of performance (over time and in a range of workplace relevant contexts) together with application of underpinning knowledge.
Assessment methods must be by direct observation of tasks and include questioning on underpinning knowledge to ensure its correct interpretation and application.
Assessment may be applied under project-related conditions (real or simulated) and require evidence of process.
Assessment must confirm a reasonable inference that competency is not only able to be satisfied under the particular circumstance, but is able to be transferred to other circumstances.
Assessment may be in conjunction with assessment of other units of competency where required.
Guidance information for assessment
Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed.