I discovered these neat products through a post on Model Trains Weathered. All of the measuring tools are laser cut acrylic. Tom (Fassett Studios) sent me drafting triangles in two sizes in HO scale, plus N, S, O, 1/72nd and 1/16". He also sent an HO scale 6" ruler.
The tools are great, and within minutes came in handy. Along with the tools he sent me a corrugated sheet die (which will be reviewed separately), and the HO ruler allowed me to cut rough 4' x 8' sheets.
The inch measurements match that of a Wescott 12" wood ruler. The HO measurements match that of a free downloadable ruler from Railroady.com.
The square ends of the drafting triangles are true, and line up perfectly with a square from Empire tools.
All of the drafting triangles have 45, 60/30 & 22.5 degree markings. All etched markings were clear, and easy to read.
Fassett Studios products are normally available on eBay, http://myworld.ebay.com/tomfassett2/