How exactly does this pattern: 距離にして work?


For full context:
<https://www3.nhk.or.jp/news/web_tokushu/2018_0202.html?utm_int=news_contents_news-
closeup_002>

The sentence in question: 八王子隕石は落下中に爆発したと考えられ、 **距離にして**
１０キロほどの範囲に、少なくとも１０個以上のかけらが落下したことが、当時の日記や随筆など多くの文献に記されています。

My attempt at translation: "Concerning Hachioji meteorite, it is
assumed/thought that it exploded midair (=in the middle of the fall) and in
contemporary literature like diaries and essays it is written down, that in a
scope of around 10 kilometers, at least not less than 10 fragments fell down."

I don't understand what exactly 距離にして does here and especially I dont know how
it functions. "Making it into range/distance" is how I would translate it
literally. It isn't much of an obstacle for me in understanding what the
sentence wants to tell me, but since it adds up with １０キロほどの範囲に it feels
redundant, since in this phrase it is already indicated that we are talking
about a spatial entity.




距離にして is not redundant in this sentence. It is a clarifying how the 10
kilometers was measured; i.e. 'in a straight line'.

Saying 'within a range/scope of 10 km', it could be argued that the method of
achieving said measurement is ambiguous. So, for clarity, they added 'as
measured in a straight line'.




距離にして is not redundant in this sentence. It is a clarifying how the 10
kilometers was measured; i.e. 'in a straight line'.

Saying 'within a range/scope of 10 km', it could be argued that the method of
achieving said measurement is ambiguous. So, for clarity, they added 'as
measured in a straight line'.

