Patricia Era Bath invented the tool used to fix cataracts. The tool is the Laserphaco Probe and it was patented in 1988.
Patricia Bath
an astrolabe
The global positioning system was invented as a military tool for use in combat operations. It then expanded to regular society.
it is called an star chart
I think you're thinking of a compass.
Patricia Bath
A Chinese scientist named Chang Heng invented a machine called Dragon Jar that was used to measure earthquakes.
The first burin was invented in the 16th century. A burin is a tool used in printmaking.
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This tool has been used for centuries. It was invented about 500 BC and appeared in Europe in the 12th and 13th centuries.
We do not know what your topic tool is, so we cannot help you.
Pharmacists generally use the tool called the rollins. This is a small medecine divider invented by scientist Jeff Rollins back in the late 1800's. Pharmacists generally use the tool called the rollins. This is a small medecine divider invented by scientist Jeff Rollins back in the late 1800's.
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It was a good tool for war.
an astrolabe
Stone tools have been used by human ancestors for over 3 million years. The earliest known stone tools are from the Oldowan industry, dating back to about 2.6 million years ago. Over time, these tools evolved into more complex forms such as handaxes and spear points during the Acheulean industry around 1.7 million years ago.
Mr. K