A corner brace I found in a house I bought in northern Finland. Made by Vammas. Not a very common tool up here I would think. Works nice, just needs a quick
Vintage Corner Brace Bit Drill | EstateSales.org
Miller Falls Corner Drill Brace and Bit Antique 1907-1927 Tool - Etsy
1907 36 Millers Falls Corner Bit Brace 502 Vintage Woodworking/carpentry Tool Hand Drill Double Handle Wooden Works Wood is Good 8 Sweep - Etsy
Extra Fine MILLERS FALLS No. 502 Corner Brace - 88585 – Jim Bode Tools
STANLEY 993 Corner Bit Brace NEW with Tag - 83491 – Jim Bode Tools