1. Instruments of any piece of drawing misuse and or not do abuse.

• Do not abuse or misuse of any piece of drawing instruments.

2. Immediately measuring report defective to any tools and hazard instructor.

• Report defective measuring tools and any hazard to instructor immediately.

3. Clean cloth after a tool using, it with a damp thoroughly.

• After using a tool clean it thoroughly with a damp cloth.

4.Carefully hand throwing instead over it to anybody avoid a tool to him.

• Avoid throwing a tool to anybody instead hand it over to him carefully.

5.A best friend is a investment good craftsman's and the lifelong tool.

• A good tool is a lifelong investment and the craftsman best friend.

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