All models have double scales calibrated in ISO and imperial units.
The L1 range allows you to know the peak value thanks to a memory needle.
The L2, L3 abd L4 analyzers have a “Autostop” function that allows the needle to remain athe maximum torque load applied. Pressing the reset button sends the needle back to zero, ready off the next torque application.
The L1, L2 and L3 ranges attach to a vertical support.