JSS1 Basic Technology Lesson Note on Marking Out Tools; Measuring Tools; Driving Tools and Cutting Tools

The website has the complete lesson note for all the subjects in secondary school but this piece showcases the JSS1 Basic Technology Lesson Note on Marking Out Tools; Measuring Tools; Driving Tools and Cutting Tools. You can use the website search button to filter out the subject of interest to you.

CLICK HERE to download the complete Document: DOWNLOAD HERE

TOPIC: METAL WORK HAND TOOLS: MARKING OUT TOOLS, MEASURING TOOLS, DRIVING TOOLS AND CUTTING TOOLS.

CONTENTS

Marking-out tools
Measuring tools
Driving tools
Cutting tools

Content Development (NOTES FOR FIRST LESSON/PERIOD ONE)

Sub-Topic I: MARKING OUT TOOLS

These are hand tools used for marking out the required shapes of a particular metal from the sheet metal before cutting in the metal workshop. Examples are:

Surface plate: for checking the alignment and flatness of the object.
Surface table: this is used for marking out large objects, for checking accuracy, for height alignment and checking parallelism.
Scriber: this is used for marking out straight lines on metals in conjunction with other marking out tools.
Centre punch: this is used to locate the centre of a hole to be drilled.
Dot punch: this is smaller in shape and is used to mark or dot on scribed lines.
Trammel: this is used for marking out large diameter, where compass cannot serve.
Marking gauge: this is re-adjustable. It is used for marking specific lines along and across the grains of the wood.
Odd leg caliper: (Jenny’s Caliper). This is used for marking out lines parallel to an edge. It is also used for finding the centre of a round bar.
Mortise gauge: this is used for marking out two parallel lines at a time.