On a tape measure, little diamond at about 19 1/4 inch. : r/whatisthisthing
DeWalt DWHT33976S 1-1/4" x 35' Premium Tape Measure with 13' - Diamond Tool
What are the 19-3/16+ marks on a tape measurer for?
Tape Measure Diamond : r/Tools
Stanley 16 ft. x 3/4 in. Tape Measure 30-495S - The Home Depot
What are the 19-3/16+ marks on a tape measurer for?
Amazon.com: Lufkin L1125B Home Hand Tools Measuring & Layout Tapes, Multi, One Size : Tools & Home Improvement
What's the diamond for on a tape measure? - YouTube
Tape measure - Wikipedia
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PRO FRAMER 25 FT Tape Measure with Layout & Cutting Templates - - Amazon.com
The Real Reason Behind Those Diamond Shapes on Measuring Tape
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Diamonds On A Tape Measure Used For measuring roof rafters and floor joists - YouTube
What are the 19-3/16+ marks on a tape measurer for?
My tape measure has little marks on it, spaced apart every 19 inches and some change. Why? - Quora
Tape Measure Markings: What Are They For? - Pro Tool Reviews
PRO FRAMER 25 FT Tape Measure with Layout & Cutting Templates - - Amazon.com
Tape Measure Markings: What Are They For? - Pro Tool Reviews
Stanley 100 ft. Tape Measure 34-106 - The Home Depot
What the Black Diamond on Measuring Tapes Is Really Meant for and Secrets of Other Household Items - YouTube
How to Read a Tape Measure-7 Surprising Tape Measure Tricks | Apartment Therapy
What are these diamond and arrow markings at the 19 3/16th inch and 40cm mark? : r/Tools
Diamond Truss Marks on Tape Measures - YouTube
Decimal Inch Tape Measure, 25 Foot, Black Marks Even hundredths of an inch, Black Numbers for Tenths of an inch and inches, red for feet and inches, Magnetic Three Rivet Hook, Tape