Since you said
"pocket scientific calculator", I infer that you have at
least one really big pocket! :-)
Jacket pockets, trouser pockets, none particularly oversized... it's not
a tight squeeze unless I put the HP-49G and my wallet in the same pocket
at the same time.
I have no problem at all fitting an HP49G in my shirt pocket.
I once fitted an HP41 + card reader, digitial cassette drive (82161),
thermal printer (82162) and an assortment of modules/cards in my coat
pocket. Of course it's a Barbour...
-tony