One of Scotty's cool minimalist hand tools, unnamed onscreen, this piece has been dubbed the "micro scaler". Featured in episodes The Enterprise Incident and Elaan of Troyius.
Machined acrylic, with adjustable aluminum 'calipers', and red acrylic indicator details.
The last image is of the entire 7-piece TOS Diagnostic Toolkit, with display stand.
By gaston.
