Nun’s Spider Web Weavers are a set of round and square plastic templates that you could purchase in the late 1930’s. As they are very difficult to find now, I have included scans of the two templates so you can cut your own looms from template plastic (available from the quilting section of your local craft shop).
The instruction book has basic teneriffe lace instructions, designs to make, plus full size templates to put on your loom to work them.
Download the Nun’s Spider Web Weaver pattern book