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Symbol | Definition |
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≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |
The board-foot is a specialized unit of measure for the volume of lumber in the United States and Canada. It is the volume of a one-foot length of a board one foot wide and one inch thick.
Board-foot can be abbreviated FBM (for "foot, board measure"), BDFT, or BF. Thousand board-feet can be abbreviated as MFBM, MBFT, or MBF. Similarly, million board-feet can be abbreviated as MMFBM, MMBFT, or MMBF.
The official imperial cup was half an imperial pint or 10 imperial fluid ounces. It is no longer in common use, but appears in older recipe books.
1 imperial cup | = | 0.5 | imperial pints |
= | 2 | imperial gills | |
= | 10 | imperial fluid ounces | |
≈ | 284 | millilitres | |
≈ | 19 | international tablespoons | |
≈ | 14.25 | Australian tablespoons | |
≈ | 1.20 | U.S. customary cups | |
≈ | 9.61 | U.S. customary fluid ounces |