what does a standard thread gauge measure
This is a tool that is used to measure the pitch diameter of a screw. This tool looks like a standard micrometer except that the anvils are specially configured to reach into the screw thread groove and touch the pitch diameter of the screw thread. The screw thread micrometer does not measure any other aspect of the screw thread. It does not measure the: pitch; threads-per-inch; major diameter; minor diameter; flank angles; lead; helix angle.
I measure it by eye.
The instrument is called a screw gauge because it uses a calibrated screw mechanism to measure small distances with precision. By turning the screw, the user can move the measuring jaws closer together or farther apart to capture the dimensions of the object being measured.
A "screw pitch gauge" is used to measure screw pitch. Typically, the gauge has a number of indented templates for each standard pitch. Matching a particular template to the screw or nut gives the pitch. You can also use a measuring device (ruler, micrometer, etc.) to measure a group of threads and then "do the math" to estimate pitch. Accuracy depends on your ability to accurately measure length and count threads.
well, if you want to measure the length, just stretch the tape and measure it. If you want to measure the diameter, measure the circumference of the screw, then divided by 3.1415, then you will get the diameter.
A screw gauge is used for this purpose.
What measurements units would be best to measure the amount of wanter in and eye dropper
This is a tool that is used to measure the pitch diameter of a screw. This tool looks like a standard micrometer except that the anvils are specially configured to reach into the screw thread groove and touch the pitch diameter of the screw thread. The screw thread micrometer does not measure any other aspect of the screw thread. It does not measure the: pitch; threads-per-inch; major diameter; minor diameter; flank angles; lead; helix angle.
You measure from the bottom of the meniscus, at eye level.
Optomotrists
A eye dropper is used to measure right amount of chemicals