To be deductible, a business expense must be both ordinary and necessary. An ordinary expense is one that is common and accepted in your trade or business. A necessary expense is one that is helpful and appropriate for your trade or business. An expense does not have to be indispensable to be considered necessary. It is important to separate business expenses from the following expenses:
A duple meter metronome that is useful for 2/4, 2/8, 2/2 (cut time), and 6/8 when it has two beats per measure.
We assume you are converting between nanometre and metre. You can view more details on each measurement unit: nanometers or meters. The SI base unit for length is the metre. 1 metre is equal to 1000000000 nanometers, or 1 meters. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between nanometres and metres. Type in your own numbers in the form to convert the units!