Panme là dụng cụ đo chính xác, tính vạn năng kém ( phải chế tạo từng loại panme đo ngoài, panme đo trong, panme đo sâu) phạm vi đo hẹp (trong khoảng 25mm)
Outside micrometer is precisely measuring, multimeter inferior (to manufacture each kind of digital outside micrometer, micrometer gauges, micrometer measuring depth) measurement range is narrow (in the range of 25 mm)
Micrometer is accurate measuring instruments, poor pluripotency (to manufacture each measuring micrometers apart, measured in micrometers, measuring micrometers deep) measuring range narrow (about 25mm)