Lest you think that the Indian square dug up by Suzanne Ellison this week (see it here) is an anomaly, check out this excellent illustration dug up by Jeff Burks. Yes, we now have dueling researchers (cue the harpsichord rendition of the soundtrack to “Deliverance”).
This gorgeous image is from the British Library and circa 1825. In addition to the square, which appears to be a hybrid form of a miter square and a Melencholia-type square, we also have a curious image of his saw.
The saw looks much like an Egyptian saw that is on its way to Japan to become a backless Kataba. Or perhaps it is Dutch-ish? If you zoom in you can see clearly that the saw is designed to cut on the pull stroke, like an Egyptian saw.
— Christopher Schwarz