XL Microwave 500 Frequency Standard With Rack Ears and Option 145 - Fair 146784249961 Photo is on the listing

Photo is on the listing

Manufacturer National Instruments Model Number 199905A-0R61 SKU 19-70437 Ref 23-100522

2x Unlabeled Valves

Manufacturer Yamaha Model Number MT100 SKU 19-30156 Ref 23-112777

Includes Drying Tube

XL Microwave 500 Frequency Standard With Rack Ears and Option 145 - Fair 146784249961 Photo is on the listingCondition Used Description This item is fully tested and in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in fair condition showing moderate to heavier scuffs scratches blemishes from previous use. Unit has minor corrosion rust on screws. Includes Frequency Standard With Rack Ears and Option 145 as pictured. No additional items or accessories are included. Unless pictured, no power adapter power cable included. Photos