HP Agilent 53131A Universal Frequency Counter Tested working ✅ * US ultra high stability OSC Option * 3GHz Frequency Extension Option *GPIB / RS232 * Level / rise time / duty cycle measurements * Practically works up-to 3.3 GHz Calibration and certificate can be arranged for £75 extra. Local collection info: Gloucester Delivery charge: May vary if outside Europe Please note: other test equipment, cables, manuals are NOT included
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