1.3
It is a milligram.
about 10 grams, plus or minus. depending on the size
The safety pin has a pin that goes into the head of the pin, and you push the point in or out of the head of the pin.
a safety pin
safety pin
safety pin
The safety pin was invented to pay off a debt.
In 1850, a safety pin cost around 1 to 2 cents, depending on the quality and size of the pin. Some higher-quality pins may have been more expensive, but this was the general price range for a standard safety pin during that time period.
No it is not made of cells it is dead a safety pin is not alive
why did Walter hut make the safety pin
Walter Hunt invented the safety pin in 1852