Shopping cart is empty


To prevent automated spam submissions leave this field empty.

+44 (0) 191 387 1923


Map replacement


Peak Test Services Ltd

152a Front Street
Co. Durham
United Kingdom
+44 (0) 191 387 1923
+44 (0) 191 387 1994

Contact Us


Peak Test Services can now provide a new
The blocking tester is a special tool to detect b

About Peak Test

Formed in 1986, Peak Test Services Limited is a UK leader in the distribution of test probes and receptacles. It carries arguably the most comprehensive range of probes, many of which are available ex-stock for next day delivery. We are the UK distributor for VPC Mass Interconnect, Optomistic Lightprobes and Engmatec Test products. Peak Test Services is an ISO accredited Company.

The leading UK distributor of Spring Contact Test Probes and Test Accessories

Tool for Detection of Blocked & Tight Probe Plungers

The blocking tester is a special tool to detect blocked or tight plungers very quickly (max spring force of 6.0N). 


  • Unique design with a LED display showing if the plunger is stuck
  • Simple tool with integrated switch probe P201/G. The switching element activates the LED.
  • Test height is adjustable by threaded sleeve
  • Spring force adjustment possible by exchange of the integrated probe

​For further information on this tool, or to order yours today, please contact our dedicated sales team.