Building instrument and materials II

BASIC SCIENCE JSS1 second term

Sub-Theme: Drawing practice

Theme Materials and processing

WEEK 4

Building instrument and materials 2

Performance objectives

Students should be able to:

1. Demonstrate the correct technique for handling drawing instruments.

Content

Instrument and materials for technical drawing

Drawing board

This is where drawing sheet and papers are laid. The drawing board hs various sizes and types. It is rectangular in shape made of good quality wood and with a smooth and flat surface. Some are made of aluminium. The drawing board serves as a table for laying drawing sheet.

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