Product Overview
Keithley Instruments Model 410 Micro-Microammeter – Used, AS-IS for Parts
This listing is for a Keithley Instruments Model 410, a precision micro-microammeter designed for highly sensitive current measurements.
Known for its vacuum tube circuitry and careful engineering, the 410 was once a mainstay in research labs. This unit has not been tested and is offered as a parts unit. It likely needs capacitor service due to age, though the vacuum tubes are still present.
Product Condition
Untested, sold AS-IS for repair or parts. Vacuum tubes are included. The power cord requires a new plug. Capacitors may require replacement given the age of the instrument.
Product Overview
Keithley Instruments has a long history of providing high-sensitivity measurement equipment to laboratories and research institutions. The Model 410 was engineered for ultra-low current detection, pushing into the range of picoamperes. While no longer in active production, this model remains valued among restoration specialists, instrument collectors, and technicians seeking authentic period components.
Key Features
- Manufacturer: Keithley Instruments
- Model: 410
- Type: Micro-Microammeter (sensitive current measurement instrument)
- Vacuum tube circuitry present
- Requires new power cord plug
- Capacitors likely require replacement due to age
- Sold untested, AS-IS for parts or repair
- Full-scale precision design from a leading test equipment brand
Applications
- Donor unit for vacuum tubes and vintage instrument parts
- Repair and restoration projects for classic Keithley equipment
- Collector piece for mid-20th-century test instruments
- Educational teardown of vacuum tube measurement technology
- Historical display for laboratory instrumentation
- Reference for designing or comparing analog measurement systems
Frequently Asked Questions
Is this unit functional?
No, it is untested and sold AS-IS. Capacitors and wiring may require replacement.
Are the vacuum tubes included?
Yes, the vacuum tubes are present in the unit.
Does it have a working power cord?
The power cord is present but needs a replacement plug before operation.
What was the original purpose of this instrument?
The Model 410 was used for highly sensitive current measurements, down to the micro-microampere range, in laboratories and research settings.
Is this suitable for modern lab use?
Not without restoration. It is best suited for repair projects, collectors, or parts harvesting.
Once a cornerstone of precision measurement in research labs, this Keithley 410 now offers its legacy through parts, restoration, or display — its next story belongs to you.
