Cutting a replacement board to fit a gap you measured in place

Stairs
Maintenance & Repair
Miter Saw

Repair work is the opposite of new build: the opening already exists, it is rarely square, and the part has to be cut to whatever is actually there. Carrying a figure like thirty-three and a sixteenth from the gap to the saw in your head is where the second trip comes from. The M1 Caliber puts that number on the fence, so the stock is slid to the measured length with blade width already taken out of it.

How the repair part gets sized

The opening exists and is rarely square
Measure the gap where it is, in place
33 and 1/16 carried to the M1, not memory
Blade width already out of the M1 number
M1 Caliber slides the stock to the figure

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A gap beneath an existing concrete step is measured with the tape run in underneath the tread, the display reading in the eighths. A replacement timber board is then taken to the saw and cut at thirty-three and one-sixteenth with the M1 Caliber on the fence. The board is offered back into the same gap.