Vintage Hewlett-Packard HP Vacuum Tube Voltmeter Model 400D

Description

Hewlett-Packard HP Vacuum Tube Voltmeter
Model 400D.
Condition is "Used". Unit is in unknown condition! I don’t know enough about this item to further test - so being sold AS-IS! all sales final, no returns.
(This is vintage electronic equipment).
Shipped with USPS Priority Mail or FedEx.
This is at my discretion depending on shipping costs.
I will refund shipping cost difference of more than !
Item is heavy!