Spencer 75 ft Diameter Tape Refill

This Spencer diameter tape refill is a replacement 75 ft blade for a Spencer tape case. Diameter tapes read tree diameter directly when wrapped around a trunk, which makes them a standard tool for foresters, consulting arborists, and tree inventory work.

Why a diameter tape matters

Diameter at breast height (DBH) drives a lot of decisions: tree inventories, appraisals, removal quotes, protection ordinances, and dosing for plant health treatments. A diameter tape is graduated so that when you wrap it around the trunk, the reading is the diameter, not the circumference. No math, no rounding errors in the field.

Blades take a beating. They get kinked on bark, cut on brush, and worn where they rub the case. A refill lets you swap just the blade and keep the case you already trust.

Fitting the refill

Match the refill to your Spencer case model and length before you order; refills are made for specific cases. Follow Spencer's instructions to remove the old blade and wind in the new one, and keep the case free of grit so the new blade retracts smoothly.

Wrap the tape level and snug around the trunk at the height your standard calls for, usually 4.5 ft above grade in the US. More measuring tools are in forestry tools.

Recheck a refilled tape against a known length the first time you use it. If you track trees over years for a client, consistent tools and measuring height matter more than small differences between tapes, so note what you used in your records.