Diff between water and oil pump? m, cm, mm, micron difference? Thread gauges(m8,m4,m10..etc) pitch? Types of gauges?

Question

Accepted Answer

Water pumps are used to move water, while oil pumps are used to move oil. They differ in design and function.

Water pumps are typically centrifugal pumps, while oil pumps are often positive displacement pumps.
Water pumps are designed to handle water, while oil pumps are designed to handle oil.
Water pumps may have impellers made of plastic or other materials that can handle water, while oil pumps may have metal impellers that can handle oil.
The units of measurement for water pumps are typically liters per minute (L/min) or gallons per minute (GPM), while oil pumps are typically measured in liters per hour (L/h) or gallons per hour (GPH).
Thread gauges are used to measure the pitch of threads on bolts and other fasteners. Common thread gauges include M8, M4, and M10.
Types of gauges include plug gauges, ring gauges, and thread gauges.

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