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GEPARD M4 cylindrical

The M4, the new generation of GEPARD: Functionally to 100% compatible, the cylindrical casing opens completely new application areas and for the first time also allows absolute measurements. The components could not only be made smaller (which was enabled by the compact cylindrical housing among other things), but also on board as standard there are powerful NiMH rechargeable batteries and Bluetooth wireless data transmission.   

As well as adjustment measurements, the GEPARD™ M4 with the new cylindrical casing can now take absolute measurements for the first time and is thus especially suitable for use in rotatory systems. In this area therefore, the rotation, run-out or alignment of gears, shafts or drives can also be measured and regulated. For greater robustness and better temperature coefficients, the standard cylindrical casings are made of stainless steel (INOX) but are also available in aluminium as an option.    

GEPARD Transmitter S4R cylindrical

GEPARD Transmitter S4R cylindrical
GEPARD Transmitter S4R cylindrical

The new cylindrical GEPARD laser transmitter is distinguished by the high-precision align-ment of its optical-mechanical longitudinal axis. This alignment allows precise absolute measurements in relation to the laser focal point  for example, the alignment of rotation systems or the machining axes of milling cutters, lathes, boring machines etc.

Using suitable mountings, the cylindrical transmitter is also suitable for measurement and alignment work on flat test objects.  

GEPARD™ Receiver E4R (cylindrical)

GEPARD™ Receiver E4R (cylindrical)
GEPARD™ Receiver E4R (cylindrical)

In addition to the features of the E4K, the cylindrical receiver also has high-precision alignment of the optical-mechanical longitudinal axis, which, together with the matching transmitter (S4K), permits absolute measurements to be performed.

Like the E4K, the GEPARD E4R transmits its measurement data wirelessly via Bluetooth to the evaluation PC. Because of its infra-red operation and the powerful NiMH rechargeable batteries, the receiver is completely wireless and is trouble-free in use.  

Technical data transmitter

Transmitter GEPARD5 S4R
Laser power ≤ 1 mW
Laser class 2
Laser wave length approx. 650 nm (red)
Laser beam profile circular optimised Gaussian distribution
Laser beam diameter in 20 m approx. 6 mm
Power supply NiMH rechargeable battery 1.5 V type AA
Dimensions L x H x W ø 50 mm, L: 70 mm
Weight 500 g incl. rechargeable battery
Micro-fine adjustment yes
Optical-mechanical alignment -

Technical data receiver

Measuring range (x/y) 5 x 5 mm 15 x 15 mm
Measuring range resolution 0,1 μm 0,5 μm
Linearity ¹) ²) 0,4 ‰ 0,5 ‰
Reproducibility ¹) ²) ± 0,25 μm ± 0,5 μm
Power supply ³) NiMH 1,5 V type AA NiMH 1,5 V type AA
Radio data transmission range up to 100 m up to 100 m
Dimensions L x W x H ø 50 mm, L: 100 mm ø 50 mm, L: 100 mm
Weight 500 g incl. rechargeable battery 500 g incl. rechargeable battery
Measuring distance 0-15 m 0-30 m
Optical-mechanical alignment yes yes

¹) Data at 20°C ²) Within 80 % of the measurement range ³) From NiMH rechargeable battery or power supply unit


Software RAYTEC WIN-GEPARD with unique adaptive measuring. Measurement of straightness,
parallelism, perpendicularity, position, alignment
System requirements Windows, current PC generation (Windows XP, Vista


Pentagonal prism Max. angular error 3 arc sec.
Remote control Infra-red remote control for activating measurement externally
Stand Stable tripod (20 kg) with magnetic plate for secure attachment of the transmitter/receiver