Old School! Hilger & Watts No. 2 (1974) Vernier Theodolite and Sokkisha Leitz SDM3F06 Vernier Theo. with Leitz EDM
The Guppy made by Topcon is a dinosaur compared to the SDM3F06.
I have the SDM3E05 and it has no bells and whistles like buttons to push, it is purely a theodolite with a built in EDM and only displays H&V angles to be dialed in with a micrometer to read minutes and seconds and displays slope distances along the line of sight.
That was the first instrument I owned that needed a battery. It is still as fine as it was when purchased and less of a hassel than any since. I could at least continue to turn angles when the battery died.
RPLS NE Texas