miter box

noun Carpentry.

any of various fixed or adjustable guides for a saw in making miters or cross cuts, especially a troughlike box open at the ends and guiding the saw by slots in the opposite sides.

Origin of miter box

First recorded in 1670–80

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for miter box

Historical Examples of miter box

The miter-box, Fig. 180, is a similar device with the addition of a guide for the saw.
Handwork in Wood
William Noyes
Make all of these angles equal and if possible cut them in a miter-box.
Toy Craft
Leon H. Baxter