I’d like to announce the beta availability of GoInstruments. If you have been looking to draw dials/meters/gauges, or even just simple rulers, this should satisfy you.
You can try the evaluation kit at: [EDIT: separate kit is no longer available]
Although the code requires GoDiagram Win 2.1.2, the evaluation kit actually works stand-alone. With the next release of GoDiagram, this demo will just be included as a sample in the regular GoWin kit.
Comments, as always, are appreciated.
Oops, sorry about that. Try it again.
Very cool! Keep up the good work!
Yuval 
Is that link still available ? I tried to download it and it seems that the link is broken again,
Hi,
How to add more port in a tank…Let say i have tank with 3 input flow and 2 output flow?
The Tank sample node is derived from GoSimpleNode, which is
"A node with a resizable icon, a label, and a port on each side."
and tank is set to Orientation = Vertical, so the ports are on the top and bottom.
If you want a node with multiple distinct connecting points (instead of multiple links connecting to a single input or output port), you have a bunch of options.
GoMultiPortNode or SequencedNode in Demo1 offer two different styles of multi-ported-ness.