Standard Gage was a FINE American company that got caught up in the get rich quick world of International marketing.
The were bought by Brown & Sharpe who pretty much left them alone because they were the best at what they did... dial indicators, bore gaging and snap gages.
Ze Swiss came along and in their INFINITE wisdom after B&S handed them the reigns of the hand tool division, destroyed that company, probably because they thought no American company could do things better than the arrogant, and not so bright in many areas Swiss.
Ze Swiss moved the product to Switzerland (to keep THEIR country employed) and ruined every one of the products the proud Standard Gage Company made. They milked the name for a while and did well with the residual business but customers soon caught on, the Swiss/Euro Standard Gage products were comparative junk to the U.S. built stuff.
The Swiss drove the final nail in the Standard Gage coffin came last year when they decided to name the products Tesa/Hexagon brought in from China 'Standard Gage'. It is decent quality but not at all like the original products Standard Gage made. Now the name is just a dumping ground for a pile of 'me too' Chinese crap like calipers and such... but with a WAY hefty price when compared to any other equivalent and very prevalent Chines products.
You DO have a gem there in that indicator. It is truly well engineered and crafted and built before those in power decided Americans really don't like to work.