Found this doc for a 211.065 E320 in my copy of WIS, looks to be what you are looking for. I think its giving you measurements from where the bottom of the dipstick touches the bottom of the oil pan. The figures in brackets in the last section refer to a photo which would not copy.
The caveat is, I guess that MB fitted different oil pans in different models so the measurement values are car model / engine model dependent. If yours is a 211.065 with an 112.912/913/946/949/955/973 engine then these will do nicely, if not post up your VIN and we can find the doc for your specific situation.
I seem to have difficulty formatting this data copied from a pdf, you could try Googling the AR number below to see a better formatted version.
AR18.00-P-3035-01A
Check oil level
Oil level check
Number Designation Engine 112.912/913/946/949/955/973
Oil level Maximum mm 171 Minimum mm 151
Oil dipstick indication 140 mm Replenished oil quantity in liters +2.2 from 140 mm to 168 mm (oil level too low)
142 mm Replenished oil quantity in liters +2.1
144 mm Replenished oil quantity in liters +2.0
146 mm Replenished oil quantity in liters +1,8
148 mm Replenished oil quantity in liters +1.7
150 mm Replenished oil quantity in liters +1.6
152 mm Replenished oil quantity in liters +1,4
154 mm Replenished oil quantity in liters +1.3
156 mm Replenished oil quantity in liters +1.1
158 mm Replenished oil quantity in liters +0.9
160 mm Replenished oil quantity in liters +0.8
162 mm Replenished oil quantity in liters +0,6
164 mm Replenished oil quantity in liters +0.5
166 mm Replenished oil quantity in liters +0.4
168 mm Replenished oil quantity in liters +0.2
Oil dipstick indication 170 mm Oil quantity in liters 0.0
from 170 mm to 172 mm (oil level correct)
171 mm Oil quantity in liters 0.0
172 mm Oil quantity in liters 0.0
Oil dipstick indication 174 mm Extracted oil quantity in liters -0.2
from 174 mm to 182 mm (oil level too high)
176 mm Extracted oil quantity in liters -0.4
178 mm Extracted oil quantity in liters -0.5
180 mm Extracted oil quantity in liters -0.6
182 mm Extracted oil quantity in liters -0.7
Check oil level Page 1 of 2
ENGINE 112.912 /946 in MODEL 203 ENGINE 112.912 /955 in MODEL 209 ENGINE 112.913 /949 in MODEL 211 ENGINE 112.973 in MODEL 230
120 589 07 21 00 - Measuring rod
1 Position vehicle with warm engine on an even surface.
2 Switch off engine and maintain a waiting time of approx. 5 minutes.
3 Unplug plug (1) of oil dipstick guide tube (2).
4 Lead dipstick (3) into the dipstick guide tube (2) until its tip lies in the engine oil pan.
Leave there for at least 3 seconds dwell time.
The collar of the dipstick grip end sits close at the oil dipstick guide tube (2).
Do not kink the dipstick (3). The dipstick (3) must be pressed in and guided according to the form of the dipstick guide tube (2).
Shown on model 203 with engine 112
5 Read off engine oil level at dipstick (3). 7 Adjust engine oil level correctly, if required.
6 Establish oil replenishment amount from the oil level table. 8 Place plug (1) onto oil dipstick guide tube (2).