great & i am glad of our mutual understanding 

 & would answer your question that the jog may be more illusory than real  

 or more mental than physical 

 for any expressible meridian is technically not a sharp line but rather the band sometimes quite narrow of the delimitation of its own expression 

 so a meridian expressed as crudely as just some integral degree of longitude like say the hundredth meridian could be understood & until recently preferred to be understood as a band of longitude with a width of 1 degree or say many km even in northern canada 

 & if you express your meridian in degminsecplus5 youll get a submillimetrically wide or rather truly narrow band which is for all practical purposes as thin as a line yet still is not a line but a band at the bandwidth of your command 

 but coarsen your expression to degminsecplus3 & your band will be fatter than a tape measure 

 & if you express it in just plain degmin then your band is a mile wide  

 & if you do that without giving a datum then your mile wide band is roughly redoubled in width 

 & thats precisely or imprecisely what the enabling text creates 

 it stipulates noncontradictorily a marker that stands within the stated bandwidths of longitude & latitude & it doesnt pretend to any more exactitude than to say something very clearly in two distinct but equally clear ways 
 albeit that one of these ways could have been misunderstood to contradict rather than confirm & be reaffirmed by the other 

 so since marker 157 does indeed fall within that nicely & not at all clumsily stated neck of the woods we already have a lock on a de jure quadripoint whether ntnu is ever surveyed or not 

 nor is this text unique in expressing the location of a monument so apparently crudely 

 far from it 

 this happens all the time as you yourself have remarked in several ways 

 & the only jog that is needed in such a case is to jog the mind into realizing that the stated terms actually are a perfect mutual lock & no miss at all 

 & yes technology has come a long way but only a very short distance in survey art since the 1960s 

 i would guess about a millimeter in geodetic accuracy 

 anyway i hope this helps or at least amuses