Open Procedure Above Community Threshold Pursuant To Art. 71 Of Legislative Decree N. 36/2023 For The Assignment Of The Supply, Installation And Putting In Function Of A Focused Ionic Bundle Microscope (Fib) Combined With An Electronic Microscope With Scanning (Sem) For The Preparation Of Samples For Electronic Microscopy As Part Of The Pnrr M4 C2 Investment 3.1 Idrastra@Enl Project