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Outside Diameter Tape
P000 Pi Tape $107.00
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Diameter
Gage
Thickness
Body Width
0.5-2"
0.25"
0.007"
(0.006" 716 Stainless Steel)
0.5"
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
15-50mm
6.35mm

0.18mm
(0.15mm 716 Stainless Steel)
12.7mm
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 precision diameter tapes are manufactured to exacting standards in temperature controlled facilities at 68°F (20°C). The lines and numerals on our standard tapes are engraved and acid etched on a ground surface. The tapes have fixed readings that do not require periodic adjustments.

Inch Instructions for Use
Metric Instructions for Use

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.

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.

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.
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.
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.
Physical Properties of Steel - Pi Tape Corporation
  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.
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Phone: 800-875-4243
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Email: service@measurenow.com

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