Assessor Resource

MEM21015
Perform precision watch timing and adjustment

Assessment tool

Version 1.0
Issue Date: May 2024


This unit of competency defines the skills and knowledge required to make fine adjustments to high-grade mechanical watches in order to achieve precision timing (chronometer performance).

No licensing, legislative or certification requirements apply to this unit at the time of publication.

Band: A

Unit weight: 6

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, checklist) and due date here

Assessment task 1: [title]      Due date:

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Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.

High-grade mechanical watch characteristics include one (1) or more of the following:

finish of components:

bevelling

graining

level of polish

type of materials used for movement and case construction:

non-magnetic alloys

precious metals

quality of components used:

balance spring

escapement

balance wheel

certification chronometer

brand name

number of jewels

Record and document repair includes one (1) or more of the following:

date and extent of repair

cost of replacement part

time spent on procedure

Performance analysis includes one (1) or more of the following:

watch subjected to various testing positions:

dial up

dial down

crown up

crown down

crown right

left

states of winding:

partly wound

half wound

fully wound

temperature variation

factors affecting isochronism (equal time of vibration)

Oscillator and balance spring condition includes one (1) or more of the following:

static poise of balance wheel:

balance spring condition

concentric

flatness

beating evenly between curb pins

Dynamic poising includes one (1) or more of the following:

set up and determine out-of-poise/balance wheel using a timing machine

identify and locate point of adjustment

methods of adjustment (with cutters or milling tools)

Confirm all adjustments includes the following:

ensuring required accuracy is obtained and timekeeping is in accordance with manufacturer specifications

Watch performance and rate testing includes one (1) or more of the following:

in-beat

rate adjustment

amplitude

effect or influence of escapement

temperature

effect of positional errors

effect of balance wheel poise

effect of balance spring

states of winding

Longitudinal testing includes the following:

testing over extended time period by wearing or simulator machine

Hand tools and equipment include one (1) or more of the following:

mechanical watch timing machine

poising tools

balance wheel cutters

case opening and closing tools

Working environment includes the following:

clean bench and working area

adequate lighting and ventilation

tools and equipment organised and in good condition

ergonomic seating

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Follow standard operating procedures (SOPs) 
 
 
 
 
 
 
Establish an appropriate clean and safe work environment 
 
 
 
 
 
 
 
 
Adjust mechanical watch to minimise positional errors 
 
 
 
Verify instantaneous watch performance and rate testing 
 
 

Forms

Assessment Cover Sheet

MEM21015 - Perform precision watch timing and adjustment
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

MEM21015 - Perform precision watch timing and adjustment

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

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Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: