Continuing to discover the tools I acquired from my dad when he passed away — http://365project.org/rhoing/365/2012-12-12 — the bit on the left is, of course, a masonry bit, but the other two are "old school" countersink bits with depth gauges. From my BIL, Rod » “That is definitely a masonry bit. The other two are not only countersinks, but also depth gauges as well. They were made for a very specific screw (#6 and #7 on the one) and you drill down until the ¾" disappears, but the 6-7 is still visible and you won’t drill through your stock. These are probably so old that they were made for standard ASE stock back when a 2×4 was actually 2"×4".” Thanks, Rod!
Retired economics professor (“dismal scientist”). Married 40+ years to the love of my life; we have two grown daughters, both married, two granddaughters and a...