Diameter
|
Gage
|
Thickness
|
Body Width
|
0.75-7"
|
0.25"
|
0.007"
(0.006" 716 Stainless Steel) |
0.5"
|
0.75-9"
|
0.25"
|
0.007"
(0.006" 716 Stainless Steel) |
0.5"
|
2-12"
|
0.25"
|
0.01"
|
0.5"
|
2-24"
|
0.25"
|
0.01"
|
0.5"
|
12-24"
|
0.25"
|
0.01"
|
0.5"
|
12-36"
|
0.25"
|
0.01"
|
0.5"
|
24-36"
|
0.25"
|
0.01"
|
0.5"
|
24-48"
|
0.25"
|
0.01"
|
0.5"
|
36-48"
|
0.25"
|
0.01"
|
0.5"
|
48-60"
|
0.25"
|
0.01"
|
0.5"
|
60-72"
|
0.25"
|
0.01"
|
0.5"
|
72-84"
|
0.25"
|
0.01"
|
0.5"
|
84-96"
|
0.25"
|
0.01"
|
0.5"
|
96-108"
|
0.25"
|
0.01"
|
0.5"
|
108-120"
|
0.25"
|
0.01"
|
0.5"
|
120-132"
|
0.25"
|
0.01"
|
0.5"
|
132-144"
|
0.25"
|
0.01"
|
0.5"
|
| METRIC | |||
28-200mm
|
6.35mm
|
0.18mm
(0.15mm 716 Stainless Steel) |
12.7mm
|
28-300mm
|
6.35mm
|
0.18mm
(0.15mm 716 Stainless Steel) |
12.7mm
|
50-300mm
|
6.35mm
|
0.25mm
|
12.7mm
|
100-300mm
|
6.35mm
|
0.25mm
|
12.7mm
|
50-600mm
|
6.35mm
|
0.25mm
|
12.7mm
|
300-600mm
|
6.35mm
|
0.25mm
|
12.7mm
|
300-900mm
|
6.35mm
|
0.25mm
|
12.7mm
|
600-900mm
|
6.35mm
|
0.25mm
|
12.7mm
|
600-1200mm
|
6.35mm
|
0.25mm
|
12.7mm
|
900-1200mm
|
6.35mm
|
0.25mm
|
12.7mm
|
1200-1500mm
|
6.35mm
|
0.25mm
|
12.7mm
|
1500-1800mm
|
6.35mm
|
0.25mm
|
12.7mm
|
1800-2100mm
|
6.35mm
|
0.25mm
|
12.7mm
|
2100-2400mm
|
6.35mm
|
0.25mm
|
12.7mm
|
2400-2700mm
|
6.35mm
|
0.25mm
|
12.7mm
|
2700-3000mm
|
6.35mm
|
0.25mm
|
12.7mm
|
3000-3300mm
|
6.35mm
|
0.25mm
|
12.7mm
|
3300-3600mm
|
6.35mm
|
0.25mm
|
12.7mm
|
Our standard Imperial tapes (inches) read to 0.001” diameter with an accuracy of ±0.001” up to 144 inches.
Our standard metric tapes (millimeters) read to 0.01mm diameter with an accuracy of ±0.03mm up to 3,600 millimeters.
Each Pi Tape brand precision measuring tape is delivered with a Calibration Report traceable to the National Institute of Standards and Technology and all calibrations are performed in accordance with ANSI/NCSL Z540-1-1994, ISO/IEC 17025, ISO 10012-1, MIL-STD 45662A and 10CFR, part 21.
Inch Instructions for Use![]() |
1) 1095 spring steel is unquestionably the finest steel available for precision diameter tapes where thermal expansion and minimum stretch under normal operating tension ranges are a primary consideration. Pi Tape has received spring steel tapes for recalibration service which were manufactured over 50 years ago and are still within our tolerance of 0.001”. A light film coating of LPS3 oil is the only maintenance needed for these incredibly accurate instruments. |
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2) Our 716 Stainless Steel, a specialty steel manufactured by Uddeholm, is utilized in more corrosive environments. Although stainless steel is a softer material with similar thermal expansion qualities as spring steel, it is used effectively in a multitude of industrial applications. |
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3) Our blue easy to read utilizes 1095 spring steel and is an extremely durable instrument, often utilized in low light environments or highly reflective conditions. |
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4) The white easy to read is manufactured using 1095 spring steel or, on special request, 716 stainless steel. These tapes are very popular and can also be used in low light applications. This instrument relies on a coating for the surface of the tape and should not be exposed to paints, solvents or corrosive work environments. |
| 1095 Spring Steel | 716 Stainless Steel | |
| Coefficient of Expansion per inch per degree F. | .0000065 | .0000062 |
| Elongation % in inches | 7-10% | 7-12% |
| Hardness | 51 RC | 49-53 RC |
| Tensile Strength PSI | 259,600 | 248,000-277,000 |
| Yield Strength PSI | 235,690 | 210,000 |
THE RELEVANT CRITERIA REGARDING THERMAL QUALITIES OF STEEL
Comparing coefficient of thermal expansion
|
|
Our spring steel:
|
Other materials on the market:
|
|
|
|
.0000065”
|
.0000092”
|
Difference
|
|
24” with 5ºf temp variable
|
.0007”
|
.0011”
|
.0004”
|
|
24” with 20ºf temp variable
|
.0030”
|
.0044”
|
.0014”
|
|
48” with 5ºf temp variable
|
.0015”
|
.0022”
|
.0007”
|
|
48” with 20ºf temp variable
|
.0060”
|
.0088”
|
.0028”
|
|
|
|
|
|
As profiled, the smaller coefficient of thermal expansion available with our materials makes a significant difference when working in variable temp environments.
Pi Tape chooses to acid etch the majority of our products. Our .010” thick material is acid etched with markings that are .001” to .002” deep. This etch is more durable and does not rub off under easily under heavy usage.
Other products in the category PI Measuring Tapes:
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