HBM TTS Mounting Instructions page 13

TTS
Fig. 5.1 Positional markings
Knurled screw
Measuring
head
Fig. 5.2 Fitting the square adapter on the measuring head
Position the square adapter in accordance with the arrow
markings (see Fig. 5.1) on the measuring head; insert the
knurled screw into the central hole in the measuring head
and screw the square adapter in tight.
A1571-3.0 HBM: public
Assembling the torque wrench
Square adapter
11