Title picture of the page. Optical spring control

imess F435 offers extensive measurement of compression springs.

The worldwide proven system enables:

  • high precision quality control,

  • Information for a comfortable coiler setup and

  • easy spring construction with 3D data feedback.


innovative measurement concept for high precision measurement of compression and valve springs

The spring is centrally placed and analysed after a 360° turn.
A light bolt within the spring centre and a backlight illuminate the spring.
Prior to the measurement, a master spring is taught in which is used for comparison. The data of all master springs is saved to allow fast switches between the different types.


imess F435 offers more than quality control of compression springs

Spring Quality Control

Fully automatic check of the most important characteristics over 360°. Regardless of the state of production. Raw, ground, set or blasted. imess F435 is prepared for every
testing situation.

Coiler Setup

The spring geometry highly influences the spring’s reaction under load. Therefore, production aims for constant spring geometry. Thus, the F435 has an interface to the coiler. The entire coiling data of the spring is provided for the machine. The coiler manufacturer then handles the data provided by imess to correct automatically. Due to the well-structured presentation, the operator can recognize the deviations in the pitch or diameter curve exactly to the degree and make manual corrections on the coiling machine.

Spring Construction

The software develops a 3D model of the spring from the collected data. The 3D file can be saved as .txt to be subsequently used by CAD or other simulation programs. Hence, they may be used as feedback for the R&D department.

The interface to the coiler enables

to improve the spring geometry

step by step


imess F435 measures the 3D geometry of the spring


Grinding Angle

Pitch Gap

Number of Turns

Wire End Thickness



Outer Diameter


operator-friendly measurement software for evaluation and recording

  • Password protected parameter menu

  • Simple definition of nominal values and tolerances

  • Graphical depiction of results

  • Export of measurement values as CSV-file


The ideal compression spring measurement system for every application

imess F435 CL | Spring geometry under load

Geometry under Load

Different spring heights can be approached via load bridge. After the rotation, the evaluation of the results is displayed user-friendly (e.g. characteristics of different spring lengths in one graph).

Read our product news

imess F435 V | Measurement of long springs up to 1500 mm

Measurement of long compression springs.

The camera and lens move in vertical direction along the spring