The PTC Pacific Transducer Corp Model 307L is a Shore Type D durometer engineered for precision hardness measurement of hard rubbers, rigid plastics, and composite materials. This mechanical instrument delivers ±1 Point accuracy across a 0-100 Shore D scale and conforms to ASTM D2240, DIN 53.505, and ISO 868 standards. Each unit ships individually calibrated with ISO 17025 and NIST-traceable certification available.
Technical Specifications
Measurement Range: 0–100 Shore D points
Accuracy: ±1 Point
Indenter: Hardened steel, sharp-pointed per ASTM D2240
Loading Force: 10 lbs (5 kgf)
Material Thickness: Minimum 0.25″ (6.4 mm) standard; 1/8″ (3 mm) minimum for materials exceeding 50/D
Edge Clearance: 1/2″ (12 mm) minimum from specimen edge
The dial features a low-glare, serialized face with high-contrast numerals and an ancillary Max Hold hand for peak-reading retention. Dial accuracy correlates to calibration check blocks (Model 402D included) at ±1 point tolerance.
– Key Features
• Machined aluminum case (Height: 4 in. | Width: 2.25 in. | Depth: 1.75 in.)
• Lightweight at 8 oz.; ships in protective carrying case at 3 lb total weight
• 8-32 threaded mounting knob for permanent test stand installation
• Mechanical design—no batteries or power supply required
• Precision test block (Model 402D) included for field calibration verification
– Typical Applications
Hard rubber and rigid thermoplastics (acrylics, PVC, nylon, Lexan, polystyrenes, vinyls, Delrin, Kevlar), epoxy resins, phenolic molded materials, pipeline coatings, and composite substrates. Suitable for materials with Shore D hardness that do not deform under fingernail pressure.
– Compatibility & Integration
Test stand mounting via Model 475 (Deadweight) or Model 7000D (Hydraulic) accessory stands. Full compliance with ASTM D2240 Type D specifications ensures correlation with laboratory and production-line durometers worldwide.
