The diameter of a circular object, like a tree or a pipe, is easily measured using a Keson diameter tape measure by wrapping the tape around the object.
Keson OTR18100 Open Reel Fiberglass Tape Measure Reel (Graduations
Keson 25-ft Tape Measure Feet & Inches - PG1025 - Silver
Keson PD618 - Diameter Measuring Tape, 6 Feet – Grade Industrial
Keson PG5M Chrome Series Short Tape Measure with Nylon
How to Read a Tape Measure: Reading Between the Lines - Keson
Economically priced series. The co-molded plastic housing holds a lacquer-coated blade with easy to read marking of each eight, quarter and half inch. A side brake will slow or stop the blade return when engaged. A good tape at a very reasonable price.
Keson PG2510 Economy Tape Measure, Steel, 1 inch x 25 Feet
Keson Metric and SAE Tape Measure, Auto Lock PG18M25ALV, 1 - Kroger
This steel tape is great for determining the diameter when you can't measure it directly. Designed for finding diameter of a circumference. Handy for
Keson Diameter Tape
TAPE MEASURE, 35 FT., POWERGLIDE, R - ALTRA RENTAL & SUPPLY, INC.
Product Description This 6-1/2 foot vertical-reading leveling rod grading rod is packed in a compact like a tape measure. It? s ideal for checking a grade without having to carry a full-size rod. Great for for foundation work, grading, swimming pools and construction photo records. Easy-to-read numbers are printed on both sides. From the Manufacturer PR610 Pocket Rods 6-Feet, feet and tenths graduations.
Keson Pocket Rod
Keson 50' Tape Measure