The first two, ‘Closed – Filled’ and ‘Closed – Blank’, would usually be used in Engineering. The BS ISO Technical drawing Standard describes Five different dimension styles for us to choose from. Technical Drawing Standards: Dimension Styles April 2010 | Paul Munford Filed Under: Technical Drawing Standards Tagged With: Annotations The BS Standards defines a range of eight Nominal heights for lettering in Technical drawings The recommended Minimum sizes are: Paper sizeīS EN ISO 3098-0:1998 Technical product documentation. The sizes are: 1.8, 2.5, 3.5, 5.0,7.0,10,14 and 20mmĪ formula of 1:√2 (≈ 1:1.4) is used to calculate the sizes available,the same formula that calculates paper sizes and line weights. The BS Standards defines a range of eight Nominal heights for lettering. Technical Drawing Standards: Lettering Heights May 2010 | Paul Munford Filed Under: Technical Drawing Standards Tagged With: Annotations
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