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NICE 18TH CENTURY NAVAL OFFICER'S FOLDING SECTOR RULER
$8.18
96
- Restocking Fee: No
- Item must be returned within: 14 Days
- Date of Creation: Pre-1800
- Return shipping will be paid by: Buyer
- Material: oxbone and brass
- Original/Reproduction: Original
- Condition: In good condition for age with a great patina.
- Region of Origin: Europe
- Type: Ornaments & Bowl Fillers
- Refund will be given as: Money Back
- All returns accepted: Returns Accepted
Description
Description
Here is a n
ice late 18th century, pre 1900 in date naval officer’s folding sector ruler in good original condition. The oxbone surface has a nice patina from age with a brass hinge. A n
umber of scales are inscribed upon the instrument which facilitate various mathematical calculations. It was used for solving problems
in
proportion
,
multiplication
and
division
,
geometry
, and
trigonometry
, and for computing various mathematical functions, such as
square roots
and
cube roots
.
Its several scales allowed easy and direct solutions of prob
lems in
gunnery
,
surveying
and
navigation
. Originally from Leith docks, Edinburgh Scotland from a maritime naval collection. Measuring 12 inches long when folded out straight
.
Please care to look at my other items currently on Ebay.
I combine items for shipping.
This item will be airmailed from Scotland
.
