SRS Stanford Research Systems SR620 Universal Time Interval CounterModel Number SR620 Place of Origin USA Brand Name SRS Function normally Condition: USED guarantee 1 Months Appearance Condition 80% new Price consult Selling Units: Single item Single package size: 60X50X20 cm Single gross weight: 12. 000 kg Product Description Product appearance: 80% 99% New Functional test: Normal We have 4 units of SRS Stanford Research Systems SR620 Universal Time Interval Counter. Pictures shown are for reference; we ship