Eastern bloc resistors - overview
Created: 07 June 2025
Easter bloc era old precision resistors overview with photographs and details
Mahr 1204 IC mechanical meter
Created: 06 May 2023
Short teardown and review of VLDT meter for precision dimensional measurements
Review of Tinsley 5685A high stability resistance standards
Created: 31 December 2022
Tests and experiments with oil-filled AC/DC standard resistance standards from Tinsley, UK.
Ohm-Labs precision high resistance standards
Created: 28 December 2022
Review and benchmarks of Ohm Labs high value resistance standards
Benchmarks of old L&N 4040B 10000 Ohm resistance standard
Created: 15 February 2022
Quick review and measurement results of old Leeds & Northrup 4040B 10kOhm oil resistance standard
Lakeshore 331 Cryogenic Temperature Controller
Created: 25 April 2021
Teardown and tests of Lakeshore 331 Temperature Controller for cryogenics applications
SensePeek SP200 passive probe review
Created: 10 November 2020
Review of the inexpensive passive 200 MHz probe designed for positioner setups.
Benchmarks and performance of Teledyne LeCroy ZS1500 active single-ended probe
Created: 18 October 2020
Review and looks on LeCroy active probe, rated up to 1.5 GHz bandwidth with 10:1 attentuation.
Picotech TA061 SMA passive probe review
Created: 15 October 2020
Benchmarks and quick look on performance of the passive SMA probe, rated for 1.5 GHz BW.
Teledyne LeCroy PP023 passive probe review
Created: 15 October 2020
Review and benchmarks of the passive oscilloscope probe for general purpose use.
HP 16340A RC calibration box for electrometers
Created: 24 July 2020
Fixture for electrometer calibration, resistances from 100 Ω to 100 GΩ and 100 + 1000 pF capacitors.
Review and experiments with Ballantine 1394N TVC kit
Created: 31 May 2020
Testing thermal converters from Ballantine, DC, 10 Hz to 100 MHz capable 6-unit set.
Review of Keysight B2987A Electrometer
Created: 06 December 2018
Review and teardown of modern picoammeter/electrometer B2987A unit from Keysight Technologies.
Fluke 752A reference divider testing and review
Created: 30 June 2018
Testing Fluke 752A metrology grade 0.5ppm voltage divider
Keithley DMM6500 teardown and comparison
Created: 27 May 2018
Look inside of the Tektronix/Keithley DMM6500 6.5-digit multimeter.
ESI SR104 10000 Ohm resistance standard review
Created: 04 April 2018
World's most proven 10000 Ω resistor. Initial checks, overall design review and calibration history.
Keysight E36312A bench DC PSU teardown
Created: 01 February 2018
Test and review of Keysight E36312A, triple-channel low-noise DC power supply.
Fluke 5450A Resistance calibrator
Created: 21 June 2017
Review and calibration of Fluke 5450A 0-100Megaohm resistance calibrator.
Fluke 719 30G pressure calibrator : short review
Created: 16 April 2017
Teardown and quick review of Fluke 719 30G Electrical Pressure Calibrator.
Keithley 7168 nanovolt switch card and it's use with RPI
Created: 21 January 2017
Application of nanovolt scanner switch card with control from Raspberry Pi
Tektronix MDO4000C mixed domain oscilloscope (MDO4054C) teardown
Created: 21 December 2016
Quick review of Tektronix Model MDO4000C series oscilloscope
Review of Keithley 2001-TCSCAN scanner card for 200x DMMs with CJC
Created: 25 October 2016
Quick teardown of scanner addon card for Keithley 2000/2001/2002 series DMMs