Engineering Compass

By maggienola, 18 March, 2011
Description

I am not exactly sure what this is.  It is in excellent condition with all caps and box kept with tools included.

I have been told it is an Engineering Compass from the 1940's.  Looking for more information and approximate value for sale. 

Category
Scientific Instruments
Medium
Brass
Distinguishing marks
Serial 28559, 78308
Condition
Excellent
Size and dimensions of this item
11" tall
Weight
16 Pounds
History
I inherited this from a family member that was in construction in the 40s-70s. I have been told this is an Engineering Compass. When I looked into Tamaya I saw Sextant, but not sure what this is. It has been kept in the box at all times.
eBay Auction Link
For Sale?
Yes
Photos