you have somewhat of an overdesigned typeface that matches your description, besides the usual Leonardo.

Draughtwork is close, but a little too much (don’t need the grid)! “Overdesigned” will work because I’m only using two letters (UT). The Leonardo I have on my machine is a handwritten font. Maybe I only have one of the family?

Since I am only using two letters, I may just pick a geometric typeface and add the embelishments myself. Thought it’d be simple if I could just use a typeface though.

if you only need two letters, do you have, or can you get hold of any rotring/technical lettering stencils? you could do the lettering yourself, and scan it in. you’d then get a more ‘authentic’ feel to the lettering as well…

Try Dispatch and Stainless from Font Bureau.

Héctor

Maybe you’re thinking of the Albrecht Dürer stuff.

http://www.myfonts.com/fonts/ihof/p22-durer-caps/

I bet you’re thinking of Rubino:
http://www.fonts.com/findfonts/mondosearchresults.htm?st=12&kid=rubino

hhp

another Durer:

http://www.myfonts.com/fonts/urw/hands-on-albrecht

too late apparently

I doubt the Dürer typefaces really communicate modern engineering, I would look more in these directions.

http://www.optimo.ch/pages/departement/view_font.php?id_categorie=2&id_font=1&id_font_type=5

http://www.myfonts.com/fonts/device/lusta/eighty-sans/

Tim