The SI (Systeme International) units for mass is the kilogram. For length, it is the Metre, and for volume, the Litre. Note the system is known as the International System, (SI). The International Bureau for Weights and Measures is located near Paris France, the on their web site they have lots of useful information, including for example, the prefixes for the multiples and sub-multiples. Such as Mega, and micro.
An 8 mm drill bit is equivalent to approximately a 5/16 inch drill bit.
Drill bits not only come in fractional number sizes they also come in letter sizes. The F size drill bit is .257 thousandths of an inch in diameter. A 1/4 inch drill bit is .250 thousandths of an inch in diameter, so size F is .007 thousandths of an inch bigger than a 1/4 inch drill bit.
After you measure the width of the door, you can use any unit of length you like to describe it. No unit is 'correct' or incorrect, but there's always one that produces the most convenient number ... the number that's easiest to write down, remember, and tell other people about. For the width of a door, I think inches would be a bit more convenient than feet.
It depends on what you want to measure: its length. width, thickness, strength, elasticity, resistance to abrasion. Since you have not bothered to provide that crucial bit of information, I cannot provide a more useful answer.
(trick question? find a more narrow wall.) They sell drill bit extensions - metal rod. OR measure carefully and drill from the other side. Or find a drill bit that is long enough.
You measure across the carbide tip as this is the cutting area of the drill. The flutes are there only to bring out the waste materials
With a micrometer.
No, a drill bit is quite small and also not a measuring tool. A kilometer is quite a long distance and would be as long as around 10,000 average drill bits.
The land on a twist drill is located between the flutes. It is the raised ridge or surface that extends along the length of the drill bit. The main purpose of the land is to provide stability and support to the cutting edges of the drill bit.
you measure the length of AA pencil or a pen in cm
metal drill bit has a finer point
A titanium or cobalt drill bit.
The precise shape and angles of a drill bit.
A tungsten coated drill bit.
You need a diamond tipped drill bit to drill glass or tile.
That is a drill bit designed to remove partial drill bits that have broken in a hole