I just received my torque wrench in the mail. I am familiar with beam style torque wrenches however I've never used this type with a 'rattle mechanism' before. There are very vague instructions that dont have illustrations or explanations so i have a few questions. newbie here so forgive my ignorance. I guess my biggest question is what exactly IS the 'rattle mechanism' followed by these questions in response to BBB's manual:

it states:
1 - "select the correct position of the shifter on the tool head." I have no idea what a shifter is in regards to torque wrenches.


2 - "Fasten the bolts by using the rattle mechanism" what does this mean? there is no illustration.

3 - lock position of the rattle mechanism. again, i don't know what this is.

4 - "unscrew the bolts by using the rattle mechanism." what bolts? i thought i was tightening bolts not unscrewing them...

5 - "When the head clicks through, the set torque is reached. be careful: push gently aginst the back handle with two fingers" I realize there should be an audible click when i reach the torque spec. but i don't understand where it's telling me to "push gently" against after i reach it.

why are these instructions so difficult for me to grasp? I've been wrenching for a while and have just started getting into carbon parts and feel like i should be able to deduce the correct procedures but i think english was not the first language of these writers...