Blue ESR Assembled
Blue ESR Assembled

ESR / Low Ohms Meter Fully Assembled (Battery included)


This is the fully-assembled, calibrated and tested Blue ESR/Low Ohms Meter

The latest and best Bob Parker design and successor to the famous Dick Smith ESR/Low Ohms Meter.  This handy and affordable meter measures capacitor equivalent series resistance (ESR) in the circuit. ESR is a very important characteristic of capacitors greater than 1 ufd. This meter makes measurements which are often impossible to check with capacitance meters. See the electrolytic cap ESR problem for more information on ESR.  Also great for measuring very low values of resistance.


  • Quality test leads with 4mm banana plugs and basic alligator clips included. You can add the optional croc clips and/or probes or use your own (see our accessories).

  • Easy access battery compartment.

  • On-board diagnostics to detect assembly errors

  • MkII firmware, Bob's latest.

  • Best battery lifetime, circuits function down to battery voltage of 5.5 volts



Tests electrolytics in circuit, test leads are non-polarized
Test lead resistance compensation
Automatic power off when reading is unchanged for 3 minutes
Low battery voltage warning
Easy-to-read, high brightness 0.5 inch (13mm) piercing blue LED display
Easy to read chart of good capacitor ESRs on the front panel with capacitor voltage values from 10V-450V, 1->500uF capacitance

View a short video or full demonstration video.

View a great informational page created by a satisfied customer or a great facebook page created by our Egypt distributor.

From our customers:
I appreciate the great service, the kit went together extremely well. I am very impressed with the quality of the PC board and how well the meter works". - Peter

"Thank you very much for the Blue ESR and Blue RT kits. They worked out very well and I can honestly highly recommend your kits. I am very impressed with the quality of your kits and the detail that you provided to make the assembly absolutely painless." - George

"I'll tell you why I DO feel lucky, and that's having purchased from someone who still understands the meaning of customer service! That goes a long way in my book (well, if I had a book)." - Tod

 Also see the companion Blue Ring Tester for FBT/LOPTs and Hi-Q inductors.

View some independent reviews of the Blue ESR/Low Ohms Meter.  Circuit SpotCapacitor Lab  and eHam.(Review 1, Review 2, Review 3)

See some great repair videos on Dave's TV Repair page.

Having trouble with your Blue? See our discussion forum for tips and hints.

Our Malaysian distributor has published an excellent tutorial on how to get the most from your ESR meter.