Boltight has been at the forefront of hydraulic bolt tensioning for over a decade. Our tensioning tools provide fast, accurate and safe solutions to tighten and loosen multiple bolts simultaneously.


Echometer+ is our mid-level product which delivers more features and performance than the Echometer. Quick and simple to operate, it can accurately measure elongation, load, stress and strain on bolts up to 25.40 meters in length. It offers a larger digital screen than the Echometer and is easier to navigate.

Fully compatible with the Echometer including data transfer and ancillary equipment.

Weight 2.04kg (including batteries)
Size 216mm x 165mm x 70mm 
Keyboard Membrane switch pad with 21 tactile keys
Power Source Lithium Ion Pack 10.8V, 2 amp 18hrs typical operation. Emergency battery backup. 6 x 1.5V alkaline, 1.2V AA NIMH or other equivalent power sources.
Memory 4 Gb internal & up to 64 Gb external SD Slot.
Data Output USB Direct 1.1 PC Connectivity and RS232 PC serial interface.

There are several things to consider when deciding which transducer to use:

  • The crystal diameter should be completely in contact with the bolt end surface.
  • The outside diameter should be clear of any obstruction.
  • The frequency should be chosen to suit the bolt length.
  • The larger the diameter the stronger the signal and therefore better results are obtained by using the largest size transducer that will fit on the bolt.
  • Boltight recommends the 3/8” diameter, 5MHz transducer as the best general purpose covering 90% or more of typical bolting applications.
Size (diameter) Frequency Application
1/8” (3.1mm) 5 Mhz General Purpose
1/8” (3.1mm) 10 Mhz Hi-resolution/short Bolts
3/16” (4.7mm) 5Mhz General Purpose
1/4” (6.3mm) 2.25 Mhz Long Bolts
1/4” (6.3mm) 5 Mhz General Purpose
1/4” (6.3mm) 10 Mhz Hi-resolution/Short Bolts
3/8” (9.5mm) 2.25 Mhz Long Bolts
3/8” (9.5mm) 5 Mhz General Purpose
1/2” (12.7mm) 2.25 Mhz Long Bolts
1/2” (12.7mm) 5 Mhz General Purpose
3/4” (19.0mm) 2.25 Mhz Long Bolts
3/4” (19.0mm) 5 Mhz General Purpose


Diameter reference Outside diameter
1/8” (3.1mm) 0.38” (9.6mm)
3/16” (4.7mm) 0.38” (9.6mm)
1/4” (6.3mm) 0.75” (19.0mm)
3/8” (9.5mm) 0.81” (20.5mm)
1/2” (12.7mm) 1“ (25.4mm)
3/4” (19.0mm) 1.21” (30.7mm)


Diameter reference Outside diameter
1/8” (3.1mm) 0.23” (5.8mm)
1/4” (6.3mm) 0.355” (9.0mm)
1/2” (12.7mm) 0.605” (15.3mm)

Download software:
Boltight Echometer Software Version 4.06c (Windows)
Boltight Echometer Software Version 4.06c (MacOSX)

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