求翻译：本仪表可供的品种和压力规格较齐全，压力计量单位除了以“MPa”为主外，也可制成“psi,bar"等其它单位或主，付两种单位，航头螺纹尺寸有公，英，美制等若干种，任由用户抉择。其价格仅相当于普通的抗振压力表。是什么意思？

This instrument is available for most complete variety and pressure specifications, pressure units, in addition to "MPa" outside, can also be made of "PSI,bar" or other units, such as the master, two units, thread dimension of the aviation public, English, us-made several, letting the users choice. Its price is only equivalent to the ordinary vibration-proof pressure gauge.