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Shore A Scale Durometers
> PTC® Ergo Durometer Shore A Scale Model 408
PTC® Ergo Durometer (Shore A Scale) Model 408
PTC® Ergo Durometer Shore A Scale Model 408
Orders by 1:00 PM PT Ship Today
Do you require Certification to ISO/IEC 17025?
Add Durometer NIST/A2LA Certification [+$160.00]
No written certification required
Add 1 kg Load Weight Model 441
This weight provides a constant load for hand held measurements [+$150.00]
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Made in the USA
Compatible Test Stands
The 408 case tapers to a 1 x 1 base to allow better access to confined areas. A removable top knob permits both easy handheld use or attachment to test stands.
The Model 408 Type A Durometer is designed to measure ASTM D2240 Type A hardness. This includes materials such as rubber, elastomers, and other rubber-like materials including neoprene, silicone, vinyl, and butyl. Soft plastics, felt, leather, and similar materials generally fall into this same range. PTC® s Model 408 meets or exceeds current ASTM D2240 Specifications.
Accurate readings can be
obtained in any position.
The instrument has a low glare aluminum dial with bold, easy to read numbers. The durometer comes standard with a Max Hold hand, which retains the peak reading. The case tapers to a base that is 1” x 1” to allow better access to confined areas. A removable top knob (8-32 threads) permits both easy hand held use or attachment to test stands or 1 kg deadweight.
PTC Metrology™ is accredited by A2LA for durometer calibration to ISO/IEC 17025 & ANSI/NCSL Z540-1. NIST traceable certification is available for all durometer types covered by current ASTM D2240, ASTM F1957, ISO 868, ISO 7619 and DIN 5305 standards.
The calibration report will include both “as received” and “as left” data. Complete durometer calibration includes
Indenter Geometry and Extension, Indicator Linearity and Force Curve.
These durometers can be used either with a
, hand-held or with the constant load weight
Specifications Sheet Durometer 408
Base Tapers to 1" x 1"
Max Hold Pointer Standard
Easy to Read 0 to 100 Point Dial
Accessory Test Stands Available
NIST/A2LA to ISO 17025 Certification Available
Includes Precision Aluminum Test Block & Carrying Case
Meets or exceeds current ASTM D2240 Specs
Range (Type A) 0-100 points
Accuracy of ±1 Point
Height 4 in. (10.2 cm)
Width 2-1/4 in. (5.7 cm)
Depth 1-3/4 in. (4.4 cm)
Weight 6 oz. (170 g)
Shipping Weight 3lb (1.4kg)
May the Force Curve be with you...
For a complete calibration check of mainspring, and visual and mechanical check of indenter, the instrument should be returned to PTC® (see Guarantee & Calibration Service) or refer to ASTM D2240 Specifications. PTC® recommends the
unit be returned at least every 12 months for this check. For a quick field check, follow the guideline below. Under no circumstance should a test block be used as a standard to calibrate a durometer.
1. The pointer should read zero when no force is applied to the indenter of the durometer.
2. Hand hold the durometer and insert the indenter into the hole of the calibrated test block. Apply enough force to make firm contact between the top surface of the test block and the base of the durometer. The dial reading should agree with the value stamped on the check block (±1). Several tests should be made and the results averaged.
3. The indenter must protrude 0.098 to 0.100 inches below the base of the durometer.
4. When the indenter is fully displaced, the durometer should read 100 points. Use care as to not damage the tip of the indenter.
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