System of Measurement System of Measurement |
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Material Material |
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Reading Direction Reading Direction |
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Orientation Orientation |
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Square Head Material Square Head Material |
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Component Component |
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Center Head Material Center Head Material |
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Manufacturer Model Number Manufacturer Model Number |
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Center-Finding Rulers
Zero marks the center when these rulers are positioned so the same number touches each side of an object. All are corrosion-resistant stainless steel and have wear-resistant etched markings. They're flexible for measuring slightly curved surfaces.
| Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Wd. | Thick. | Flexibility | Color | Graduation Mark Style | Hole Dia. | Each | |
Inch—Left to Right/Right to Left Reading Direction | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Stainless Steel | ||||||||||
| 12" | 16ths (1"), 32nds (1") | __ | 1 1/4" | 1/32" | Flexible | Silver | Etched | 1/4" | 0000000 | 00000 |
| 18" | 16ths (1"), 32nds (1") | __ | 1 1/4" | 1/32" | Flexible | Silver | Etched | 1/4" | 0000000 | 0000 |
| 24" | 16ths (1"), 32nds (1") | __ | 1 1/4" | 1/32" | Flexible | Silver | Etched | 1/4" | 0000000 | 0000 |
| 36" | 16ths (1"), 32nds (1") | __ | 1 1/4" | 1/32" | Flexible | Silver | Etched | 1/4" | 0000000 | 00000 |
| 48" | 16ths (1"), 32nds (1") | __ | 1 1/4" | 1/32" | Flexible | Silver | Etched | 1/4" | 0000000 | 00000 |
Inch/Metric—Left to Right/Right to Left Reading Direction | ||||||||||
Stainless Steel | ||||||||||
| 18"/45 cm | 16ths (1"), 16ths (1") | Millimeters (1 cm), Millimeters (1 cm) | 1 1/4" | 1/32" | Flexible | Silver | Etched | 1/4" | 0000000 | 00000 |
| 24"/60 cm | 16ths (1"), 16ths (1") | Millimeters (1 cm), Millimeters (1 cm) | 1 1/4" | 1/32" | Flexible | Silver | Etched | 1/4" | 0000000 | 00000 |
| 36"/90 cm | 16ths (1"), 16ths (1") | Millimeters (1 cm), Millimeters (1 cm) | 1 1/4" | 1/32" | Flexible | Silver | Etched | 1/4" | 0000000 | 00000 |
Half-Measure Adhesive-Back Rulers
Use to find diameters and centers. The graduations and numeric increments on these rulers are half the actual length of the object you are measuring; a 1" graduation is actually 1/2", a 2" graduation is actually 1", and so on. All are flexible for mounting on curved surfaces.
Segments | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Front Top Graduation Marks (Numeric Increments) | Front Bottom Graduation Marks (Numeric Increments) | Wd. | Thick. | Flexibility | Color | Graduation Mark Style | No. of | Lg., ft. | Each | |
Half-Measure Inch—Left to Right Reading Direction | |||||||||||
Plastic | |||||||||||
| 1 1/2 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 1 | 1 1/2 | 00000000 | 00000 |
| 3 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 1 | 3 | 00000000 | 0000 |
| 6 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 2 | 3 | 00000000 | 00000 |
| 7 1/2 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 2 | 3 3/4 | 00000000 | 00000 |
| 11 1/4 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 3 | 3 3/4 | 00000000 | 00000 |
Half-Measure Inch—Right to Left Reading Direction | |||||||||||
Plastic | |||||||||||
| 1 1/2 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 1 | 1 1/2 | 00000000 | 0000 |
| 3 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 1 | 3 | 00000000 | 0000 |
| 6 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 2 | 3 | 00000000 | 00000 |
| 7 1/2 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 2 | 3 3/4 | 00000000 | 00000 |
| 11 1/4 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 3 | 3 3/4 | 00000000 | 00000 |
Half-Measure Adhesive-Back Vertical Rulers
The graduations and numerical increments on these rulers are half the actual length of the object you are measuring; a 1" graduation is actually 1/2", a 2" graduation is actually 1", and so on. Use them to find diameters and centers. All are flexible for mounting on curved surfaces.
Segments | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Front Left Graduation Marks (Numeric Increments) | Front Right Graduation Marks (Numeric Increments) | Wd. | Thick. | Flexibility | Color | Graduation Mark Style | No. of | Lg., ft. | Each | |
Half-Measure Inch—Bottom to Top Reading Direction | |||||||||||
Plastic | |||||||||||
| 1 1/2 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 1 | 1 1/2 | 00000000 | 00000 |
| 3 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 1 | 3 | 00000000 | 0000 |
Half-Measure Inch—Top to Bottom Reading Direction | |||||||||||
Plastic | |||||||||||
| 1 1/2 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 1 | 1 1/2 | 00000000 | 0000 |
| 3 ft. | 8ths (1") | 8ths (1") | 1" | 0.004" | Flexible | Silver | Printed | 1 | 3 | 00000000 | 0000 |
Center-Finding Tape Measures
Find the exact center of your work. Measure the total distance with the upper scale; then find the same number on the bottom scale—that's your center point. The blade is coated for corrosion resistance. It locks in place. Case is impact-resistant plastic with a nonslip rubber grip. It's yellow for high visibility.
High-Accuracy Combination Square Heads
Attach to High-Accuracy Combination Square Blades with the included lockbolts. Center head identifies the center on pipes, rods, and shafts.
Hardened cast iron heads are more durable and last longer than cast iron heads.
High-Accuracy Combination Squares
Use these squares in place of your try square, miter square, depth gauge, height gauge, center-point finder, and level. Blades are labeled with numeric increments that are less than 1" for quick reading. All have a corrosion-resistant satin-chrome finish that reduces glare and wear-resistant etched markings.
Square head checks 90° angles. Center head identifies the center on pipes, rods, and shafts. Protractor head measures angles.
Hardened cast iron heads are more durable and last longer than cast iron heads.
Blade | Graduation | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Heads | ||||||||||||
| 12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 00000000 | 0000000 |
Hardened Cast Iron Heads | ||||||||||||
| 12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 00000000 | 000000 |
| Replacement Lockbolt | 00000000 | Each | 00000 |
Blade | Graduation | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Heads | ||||||||||||
Inch | ||||||||||||
| 12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 00000000 | 0000000 |
Hardened Cast Iron Heads | ||||||||||||
Inch | ||||||||||||
| 12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 00000000 | 000000 |
| Replacement Lockbolt | 00000000 | Each | 00000 |
High-Accuracy Combination Square Blades
Blades are for use with High-Accuracy Combination Square Heads. Blades are labeled with numeric increments that are less than 1" for quick-reading. All have a corrosion-resistant satin-chrome finish that reduces glare and wear-resistant etched markings.
Graduation | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Accuracy | Wd. | Thick. | Color | Color | Mark Style | Each | |
Inch | ||||||||||
Satin-Chrome Steel | ||||||||||
| 12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 000000 |
| 12" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 00000 |
| 18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 00000 |
| 18" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 00000 |
| 24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 00000 |
| 24" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0025" to +0.0025" | 1" | 3/32" | Silver | Black | Etched | 00000000 | 00000 |
Starrett High-Accuracy Combination Squares
Replace your try square, miter square, depth gauge, height gauge, center-point finder, and level. The blade on these squares meets Fed. Spec. GGG-R-791H, which establishes uniform standards for accuracy, graduations, and size. Blades are labeled with numeric increments that are less than 1" for quick reading. All have wear-resistant etched markings. Protractor head measures angles.
Blade | Graduation | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Heads | ||||||||||||
Inch | ||||||||||||
| 4" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 5/8" | 1/16" | Satin-Chrome Steel | Silver | Black | Etched | 2 1/4" | 0000000 | 0000000 |
Hardened Steel Heads | ||||||||||||
Inch | ||||||||||||
| 4" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 5/8" | 1/16" | Satin-Chrome Steel | Silver | Black | Etched | 2 1/4" | 0000000 | 000000 |
| Replacement Lockbolt for Square and Center Heads | 0000000 | Each | 000000 |
Blade | Graduation | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Heads | ||||||||||||
Inch | ||||||||||||
| 6" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 3/4" | 5/64" | Satin-Chrome Steel | Silver | Black | Etched | 2 13/32" | 0000000 | 0000000 |
| 12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
| 12" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
| 18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.006" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
| 24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
Hardened Steel Heads | ||||||||||||
Inch | ||||||||||||
| 6" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.004" | 3/4" | 5/64" | Satin-Chrome Steel | Silver | Black | Etched | 2 13/32" | 0000000 | 000000 |
| 12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
| 12" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
| 18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.006" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
| 24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
Blade | Graduation | Cast Iron Heads | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Inch | ||||||||||||
| 12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 0000000 |
| 18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.006" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
| 24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
| Replacement Lockbolt for Square, Center, and Protractor Heads | 0000000 | Each | 000000 |
Blade | Graduation | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blade Lg. | Front Grad. Marks (Increments) | Back Grad. Marks (Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Cast Iron Heads | ||||||||||||
Inch | ||||||||||||
| 12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 0000000 |
| 12" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.005" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
| 18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.006" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
| 24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
Inch/Metric | ||||||||||||
| 11 3/4"/300mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.005"/-0.09 mm to +0.15 mm | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
| 23 1/2"/600mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.007"/-0.11 mm to +0.25 mm | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/2" | 0000000 | 000000 |
Hardened Steel Heads | ||||||||||||
Inch | ||||||||||||
| 12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
| 12" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.005" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
| 18" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.006" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
| 18" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.006" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
| 24" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.0035" to +0.007" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
| 24" | 32nds (4/32"), 64ths (8/64") | 50ths (1/10"), 100ths (1/10") | -0.0035" to +0.007" | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
Inch/Metric | ||||||||||||
| 11 3/4"/300mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.005"/-0.09 mm to +0.15 mm | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
| 23 1/2"/600mm | 1/2 mm (10 mm), 32nds (4/32") | Millimeters (10 mm), 64ths (8/64") | -0.0035" to +0.007"/-0.11 mm to +0.25 mm | 1" | 3/32" | Satin-Chrome Steel | Silver | Black | Etched | 3 5/8" | 0000000 | 000000 |
| Replacement Lockbolt for Square, Center, and Protractor Heads | 0000000 | Each | 000000 |
Starrett High-Accuracy Combination Square Heads
Attach to Starrett High-Accuracy Combination Square Blades with the included lockbolts. Center head identifies the center on pipes, rods, and shafts.
Hardened-steel heads are more durable and last longer than cast iron heads.
Combination Squares
Replace your try square, miter square, depth gauge, marking gauge, 90° level, ruler, and scriber with one tool. Blades labeled with numeric increments that are less than 1" are quick-reading. All have wear-resistant etched markings.
Square head checks 90° angles.
Center head identifies the center on pipes, rods, and shafts.
Protractor head measures angles.
Blade | Graduation | Aluminum Heads | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Blade Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Inch/Metric | |||||||||||
| 12"/300mm | Millimeters (10 mm), 32nds (4/32") | Millimeters (10 mm), 16ths (1") | 1" | 3/32" | Steel | Silver | Black | Etched | 4 1/4" | 000000 | 000000 |
Scratch-Resistant High-Accuracy Combination Squares
A titanium coating protects the blade against scratches and wear. Use these squares to replace your try square, miter square, depth gauge, height gauge, center-point finder, and level. Blades are labeled with numeric increments that are less than 1" for quick reading. All have wear-resistant etched markings.
Square head checks 90° angles. Center head identifies the center on pipes, rods, and shafts. Protractor head measures angles.
Blade | Graduation | Cast Iron Heads | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blade Lg. | Front Graduation Marks (Numeric Increments) | Back Graduation Marks (Numeric Increments) | Accuracy | Wd. | Thick. | Material | Color | Color | Mark Style | Head Lg. | Each | |
Inch | ||||||||||||
| 12" | 32nds (4/32"), 64ths (8/64") | 8ths (1"), 16ths (1") | -0.002" to +0.002" | 1" | 3/32" | Titanium-Coated Steel | Gold | Black | Etched | 4 1/2" | 00000000 | 0000000 |
V-Belts
