scientific instrument, n.All

A Scientific instrument (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠simply a technical object; the only purely scientific object would be a simplified teaching model, less perfect than the real thing.