Olympus OM-1 Manual page 16

Functions and Features (Items to be checked by
measuring instruments)
Shutter-releasing
Force
* Release Button
СА9084 (Button
Shaft)
R-knob
Self-timer
Flange-back
"
200 - 300 gr.
CA9083) (The plus sign (+) means that the button
is extruding from CA9083)
of CA9083)
Stopping Position: 0.5 or deeper from the tip of
CA9083)
Depth of Action: The shutter should be released
at 7 40.3 from the tip of the button.
Pulling Force: First Step 350519 gr,
Second Step 12005309 gr,
46.0 10.025