# 191 Keithley Multimeter Used

**Additional Features:**

-   Measures DC volts from 1 µV to 1200 V
-   Measures resistance from 1 megohms to 20 M-ohms
-   Push button Null - eliminates potentiometer zeroing

The Keithley 191 is a 5 1/2 digit, 200,000 count, manual ranging bench digital multimeter with dc volts and ohms ranges standard. It provides accurate, stable, low noise and fast responding readings from 1 micro volt to 1200 volts dc on 5 voltage ranges, and 2/4 terminal measurements from 1 milliohm to 20 megohms on 6 resistance ranges. The 191 is capable of 0.0005% resolution on 1 micro volt per megohm of sensitivity.

## Details

- **Price:** 0.0 USD - 270.0 USD
- **Vendor:** Keithley
- **Type:** Multi Met
- **Tags:** Keithley, Manufacturers, Meters & DAQ, Multimeter, product_manual_group_1, Product_used

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| None | 0.00 USD | In stock |
| NIST Traceable | 190.00 USD | In stock |
| NIST Traceable with Full Data | 225.00 USD | In stock |
| ISO IEC 17025 Accredited | 270.00 USD | In stock |

## Images

- 191 Keithley Multimeter Used

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> Source: [ValueTronics](https://valuetronics.com/products/191-keithley-multimeter-used)
> Updated: 2026-05-21