JBO Precision
Thread Gauges


JBO Precision Thread Gauges
a concept for quality and wear resistance

Thread Plug Gauges




Thread Ring Gauges




Special Client-Specific Thread Gauges
and Inspection Machine Mountings


Thread gauges and test fixtures
according to drawing, pattern or design
for the specific application of the customer.





One single measuring device
for checking thread size and thread depth.











Thread gauging cycle time              
reduced by 80 %









Special Client-Specific MultiCheck and
Automatic Screw Nut Gauge


MultiCheck according to drawing,
pattern or design
for the specific application of the customer.


General Advantages of JBO Precision Thread Gauges


  • Optimum surface finish on thread flanks and high hardness of thread flanks result in outstanding resistance ≥ 62 HRC to wear and long gauge life

  • Repeated tempering after the annealing process guarantees high form stability and dimensional stability

  • Large stocks covering more than 10,000 different thread dimensions and tolerances for quick delivery

  • We are the market leaders with our exceptional stock holding and variety of thread sizes

  • Complete range of gauges covering all kinds of threads from 0.5 - 300 mm diameter

  • Gauges are supplied in individual transparent packing for permanent protection

  • Inspection certificate on request


Gauges are produced to the reduced tolerance wherever permitted by the overall gauge tolerance

JBO Calibration service on Thread Gauges JBO DAkkS calibration certificate


Our in-house calibration laboratory meets the highest requirements for measurement technology. Several procedures for the calibration of thread gauges are accredited by the DAkkS according DIN EN ISO/IEC 17025. This means that the international standard specifications for calibration laboratories are introduced, implemented and regularly monitored. The advantages for our customers are obvious, JBO can deliver DAkkS calibration certificates together with stocked thread gauges in the shortest possible time. DAkkS calibration certificates are very often required, especially in the automotive, aviation and medical sectors. The current scope of validity (annex to the accreditation certificate) is linked on our website and is available for download.

We are pleased to issue calibration certificates with national and international logos (DAkkS and ILAC) for you. Furthermore, we offer a variety of different factory calibration certificates. Recalibration of thread gauges is also part of our range of services. Further information such as the underlying guidelines and the scope of calibration are documented on the following links.


Accreditation Certificate
Calibration Certificates
Overview of JBO calibration Certificates
List of flexible scope



Examples of JBO-DAkkS Calibration Certificates

JBO DAkkS Calibration Certificate LD Option 1
JBO DAkkS Calibration Certificate GR Option 1


Examples of JBO-Calibration Certificates for thread plug gauges

Calibration Certificate GO/NOT GO thread plug gauge C5
Calibration Certificate GO/NOT GO thread plug gauge Option 4


Examples of JBO-Calibration Certificates for thread ring gauges

Calibration Certificate GO thread ring gauge C5
Calibration Certificate GO thread ring gauge Option 4



Our “FAST LINE” express production is now possible for thread plug gauges and thread ring
gauges. Delivery takes place within 2 working weeks. The express surcharge for this is 200,00 € per order item.
Please mark enqueries and orders in the subject “FAST LINE” and send them to:

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Our “FAST LINE” programme includes thread plug gauges and thread ring gauges in special
tolerances and intermediate dimensions, based on cylindrical thread types,
which are listed here in the catalogue. Up to 3 pieces are available per article, in the diameter
range from 3 - 100 mm and with pitches from P 0.5 - 4 mm. Except trapezoidal threads.

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