Mel
Well-Known Member
I have been given several of these - beleived to be part of a batch of items off a yacht --- They seem to be cast steel and have a green baize cloth on the underside -- any ideas ?
Whats this Green Thing ??
- Thread starter Mel
- Start date
Sans Bateau
Well-Known Member
They are a since obsolete way of holding charts flat on a chart table. The little spike would hold two charts together.
Roberto
Well-Known Member
they are very similar to "spline weights": they were used in pre-CAD days to keep wooden splines still while drawing curved lines in yacht design, but these would not have the small spike in the end, and probably not be found on a yacht anyway -.
chrisc
Well-Known Member
Good God !suprised anyone else remembers,those were the days.
Poignard
Well-Known Member
[ QUOTE ]
Spline or batten weights, known to marine draughtsmen as"ducks"....usually made of lead or cast iron ... Most ducks have a wire hook or finger which is placed on top of the batten;... a piece of felt on the bottom protects the drawing from being marked by the metal.....
[/ QUOTE ]
From "Yacht Designing and Planning" by Howard Chappelle
Spline or batten weights, known to marine draughtsmen as"ducks"....usually made of lead or cast iron ... Most ducks have a wire hook or finger which is placed on top of the batten;... a piece of felt on the bottom protects the drawing from being marked by the metal.....
[/ QUOTE ]
From "Yacht Designing and Planning" by Howard Chappelle
Mirelle
N/A
They are very dangerous.
I will be happy to take them off your hands...
I will be happy to take them off your hands...
snowleopard
Well-Known Member
Get in the queue. I've tried for years to get hold of a set of splines and weights!
The spike on the end is to engage in a groove on the top of the spline. Without it you'd have to put some weights each side to form a curve so couldn't run a pencil continuously along the edge.
The spike on the end is to engage in a groove on the top of the spline. Without it you'd have to put some weights each side to form a curve so couldn't run a pencil continuously along the edge.
ironmaiden
Well-Known Member
these are VERY VERY DANGEROUS you must not under any circumstances have any contact with them .......other then to pop them in to a jiffy bag and forward them to my containment estabishment....... PM me for the top secret location where they will be cared for in an environment which will not put others at risk....... /forums/images/graemlins/grin.gif
richardabeattie
Well-Known Member
You are being misled by devious old yotties. It is clearly an iron mouse for a BMC computer
