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All
colonial surveying instrument makers had unique design
characteristics to their sight vanes. These seldom,
if ever, changed throughout their working careers. The
dimensions, molding profiles, and thumbscrews with appropriate
thread diameter and thread pitch were normally exclusive
to a particular maker. We make the replacement sight
vanes using our database of original manufacturers specifications
thereby insuring accurate dimensions.
Most importantly we match the patination of the newly
fabricated sight vanes to the compass body. These sight
vanes, once completed, will be virtually indistinguishable
from the originals.
Notes:
1. Each sight vane is engraved with
a signature and date to prevent confusing historical
data for future researchers.
2. We need to be supplied with the
compass in order to fit the sight vanes and match the
patina.
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