Here are a few examples:
Something that is hand packaged (or hand packed) means that a human, not a machine, chose and wrapped the item.
Not actual machine guns, but something of a predecessor to it - the hand cranked Gatling Gun.
hand in hand is when two people are holding each others hands tight.
hand in hand is when two people are holding each others hands tight.
In today's society it is picked by a machine in the fields. Back before the machine was invented slaves or others did it by hand and picked out the seeds. Now the machine sorts and picks out the seeds.
Individual people were needed to sew things by hand, the sewing machine would reduce the amount of people it would take to sew items by hand.
helped people who couldn't sew by hand with a machine.
Compared to hand guns or rifles, machine guns can kill more people faster. They are a potent weapon.
It is an example which does not follow a general rule. For example, most people have five fingers on each hand, but some people are born with an extra finger and others have had a finger amputated. Those people are the exception to the rule that people have five fingers on each hand.
hand in hand is when two people are holding each others hands tight.
The sewing machine gave people an alternative to sewing by hand. People stopped sewing by hand as much because now there was another choice. It meant that, especially for long, straight seams, there was a faster way to sew. Sewing machines are also more consistant.
by machine