The instrument uses the pencil scratch method to determine film hardness quickly and economically, using either a drawing lead core or a pencil core. Key features - Pencil scratch method for fast hardness assessment of coating films - Three-point contact: two wheels and a pencil core - Pencil oriented at a 45 degree angle to the test surface - Compatible with drawing lead cores or pencil cores - Simple setup designed for repeatable results Benefits - Fast and cost-effective way to evaluate coating hardness - Minimal material requirements: use standard pencil or drawing lead cores - Consistent measurements through fixed three-point contact and 45 degree geometry - Easy to operate with minimal training Specifications and attributes - Method: pencil scratch for hardness determination - Contact geometry: three-point (two wheels and pencil core) - Pencil angle: 45 degrees to the test surface - Construction: two wheels and a pencil core provide stable contact - Performance: efficient, economical hardness testing of coating films Applications - Quality control of automotive clear coats during production - Evaluation of protective polymer coatings on electronic enclosures - Assessment of coated metal surfaces in architectural or industrial machinery Operating guidance - Position the instrument so that the coating is engaged by three-point contact (two wheels and a pencil core) - Align the pencil at a 45-degree angle to the test surface - Run a scratch across the coating to assess hardness based on scratch resistance