Circumference Rulers

Determine the circumference of a circle without calculations. These rulers have an inch scale for measuring diameter on the top edge and the corresponding circumference scale on the bottom edge. They’re also known as tinners' rules. All are flexible for measuring slightly curved surfaces and have wear-resistant etched markings.
Circumference | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Front Graduation Marks (Numeric Increments) | Measured | Graduation Marks (Numeric Increments) | Wd. | Thick. | Flexibility | Color | Graduation Mark Style | Hole Dia. | Each | |
Inch—Left to Right Reading Direction | |||||||||||
Steel | |||||||||||
36" | 16ths (1") | 113" | 8ths (1") | 1 1/4" | 1/16" | Flexible | Silver | Etched | 7/32" | 000000 | 0000000 |
48" | 16ths (1") | 150" | 8ths (1") | 1 1/4" | 1/16" | Flexible | Silver | Etched | 7/32" | 000000 | 000000 |
Pocket-Size Diameter Tape Measures



At about half the size of standard diameter tape measures, these fit in your pocket. Wrap them around circular items to measure circumference and determine diameter without the need for calculations. The blade is painted to resist scratches, wear, and corrosion. It's nonlocking and has a loop tip that hangs on a nail or stud.
Diameter | Blade | Graduation | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Measured | Graduation Marks | Lg. | Graduation Marks | Numeric Marks | Width | Material | Color | Tip Style | Color | Mark Style | Each | |
Inch | ||||||||||||
0"-23" | 100ths | 6 ft. | 32nds (First Foot), 16ths | Diameter Inches, Inches | 1/4" | Painted Steel | Yellow | Loop | Black | Printed | 0000000 | 000000 |
0"-23" | 64ths | 6 ft. | 32nds (First Foot), 16ths | Diameter Inches, Inches | 1/4" | Painted Steel | Yellow | Loop | Black | Printed | 0000000 | 00000 |
Metric | ||||||||||||
0"-23" | Millimeters | 2 m | Millimeters | Diameter Centimeters, Centimeters | 1/4" | Painted Steel | Yellow | Loop | Black | Printed | 0000000 | 00000 |
Diameter Tape Measures




Also known as tree tapes, wrap these tape measures around circular items to determine diameter and measure circumference without the need for calculations. The blade is vinyl coated or chrome plated to resist scratches, wear, and corrosion, and the case is coated for scratch resistance. Chrome-plated blades are more durable than vinyl-coated blades.
Pointed-hook tip grabs the edge of an object or drives into wood.
Loop tip hangs on a nail or stud.
Dia. | Blade | Graduation | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Measured | Graduation Marks | Lg. | Graduation Marks | Numeric Marks | Width | Material | Color | Tip Style | Color | Mark Style | Each | |
Inch | ||||||||||||
2"-76" | 10ths | 20 ft. | 100ths, 10ths | Diameter Inches, Inches, Feet | 3/8" | Chrome-Plated Steel | Silver | Pointed Hook | Black | Printed | 0000000 | 0000000 |
2"-76" | Inches | 20 ft. | 16ths | Diameter Inches, Inches | 3/8" | Vinyl-Coated Steel | Black | Loop | Silver | Embossed | 0000000 | 000000 |