Extremely rare vintage Sextant - 1 owner - a famous inventor from upstate NY.  
1965 C Plath Trommelsextant - Micrometer Sextant 
This is the real deal and not the cheap version in the old wood case, or a plastic repro which are very common online.  This was made for maritime and is in it's original signed black bakelite case with stainless hardware and the original ribbed rubber strap.  Anyone that has actually seen an original will know what this is.  The micrometer sextant is from divided Germany from 1965, and this was produced in West Germany.  The production numbers are 47-128, and 23703.  Original paperwork and order form included.  This is a a collectors piece.  I will ship worldwide, but International shipping with this weight of 24 pounds shipping weight will be very expensive.  This Sextant comes with the original paperwork and signed order from from September 9th,1965.  Very rare to find all the boxes checked and direct provenance for a piece like this.  
The signed original black bakelite case measures 15" x 12" x 7"
This micrometer sextant has the following - 
1.) Telescope
2.) Signed and stamped original solid brass graduated arc
3.) Clamping lever with light plate
4.) Micrometer dam
5.) 3 Horizon shades
6.) Horizon mirror
7.) 4 Index shades
8.) Index arm plate w/ center access
9.) Index mirror with frame and adjusting screws
10.) Original bakelite ribbed grip handle which locks into the case and has a stopper release for secure transport
Ships FedEx Ground with insurance to the lower 48 states in the USA - 24 pounds shipping weight in a box in a box 19" x 18" x 17" shipping box.  For any other locations please request a shipping quote prior to purchase.  Ships worldwide through Ebay's Global Shipping Program.