Joined: Feb 2012
Posts: 19,345
Likes: 5,463
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
The Technomic is most commonly a very tall stem but has been made in two heights, IIRC. How much taller then some other stem is hard to say without measuring. Additionally steerers have a butted section with a smaller ID at some point as the stem fits inside the steerer that can prevent a stem from inserting beyond a set point. Lastly the clamping diameter 9of the bars) can be either a 25.4 or a 26.0mm. It's prudent to not mix the fits.
Seems to me that the answers are easy to discover without involving the world. Andy.