They are trammel points.  Here’s some new int he box

https://www.jimbodetools.com/products/stanley-no-4-trammel-points-in-
original-box-74383">https://www.jimbodetools.com/products/stanley-no-4-trammel-
points-in-original-box-74383 <https://www.jimbodetools.com/products
/stanley-no-4-trammel-points-in-original-
box-74383">https://www.jimbodetools.com/products/stanley-no-4-trammel-points-in-
original-box-74383>

The tubing is a clever way to keep from getting poked when you put your hand in
your tool box looking for them

Ed Minch