60°. Leitz Elmar-V 65mm

It's a miserable, rainy day with a howling gale blowing, no reason to be out.
I have been experimenting with marquetry designs, and had dug out the protractor head for my Starrett combination square.  There it was sitting on my bench.  I decided to Blip its exquisite engraving the old-fashioned way:  Leitz Bellows II attachment, previously Blipped here, and the lens designed just for this kind of macro work, the Elmar-V 65mm. 
The L.S. Starrett Company was founded in 1880 right here in Athol, Massachusetts.  They're still open for business, employing about 2000 people, manufacturing marking and measuring tools to precision and quality levels which remain as  international benchmarks.  Thank you to Wiki for some facts.