[smudger85]

The time has come yet again to repair the old greenhouse.
 
I've done it too many times, but this this time i have to replace a triangular window.

Can someone please tell me the best way to measure this one. i asked the guy at the glass shop, but he wants to come and measure it for a "small" fee

Thanks

[Lardman]

Which triangular windows is it the one above the door ? Im struggling to image which bit you can't measure... 

[Baldy]

I replaced the triangular glass next to the top of the door on mine a couple of weeks back. I was using polycarbonate offcut - basically shoved it into place and taped it steady - then used a marker and ruler to plot the edges - then cut it with a stanley knife.
I guess you could achieve similar for glass if you use a piece of cardboard to make your template. Then use the template to guide you and your glass cutter (paying due care and attention...)

Pip pip,
Balders

[Dantheman]

Use cardboard to get the same size and shape.