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Signs should be large enough to view without straining the eyes when communicating safety messages to employees and/or visitors. Therefore, choosing the size of a sign is more than fitting it to the space you have available. In order to comply with AS 1319, you must consider the environment, lighting and viewing distance – these factors will determine the size of sign required to suit your application. The recommended minimum sizes as per AS 1319 are as follow. For a pictogram and worded sign in a factory or work environment, where lighting is good and the sign will be mounted in a reasonably prominent position:

• Pictogram size is to be at least 15mm per metre of viewing distance
• Text size:
• Upper case: 5mm per metre of viewing distance
• Lower case: 4mm per metre of viewing distance