Features |  |
The Model 3363 is capable of making scratch hardness measurements in accordance with ASTM D 3363. It uses constant pressure and pencil leads having various forms of hardness. These leads, having various degrees of hardness, are moved over the surface being tested under a fixed pressure and at a fixed angle to the surface. The degree of hardness of the pencil lead, which damages the surface, is taken as a measurement of scratch hardness. The instrument consists of a pencil lead holder carried on two rollers, the weight of which is so arranged that the pressure exerted by the flat pencil lead is approximately 300 grams. A hand grip is provided for pushing the instrument over the specimen. Fourteen pencil leads, in the range of grades from 6B to 6H are used. The pencil leads can be exchanged easily. |
Positioning | |
To properly position the mechanical lead holder (See Fig. 2) first extend the lead about 1/4" out of the lead holder. Then insert holder through the barrel and pass it through the accessory tube. Push holder until lead is about even with end of tube. Tighten the set screw knob on top of the barrel. Lead holder is then permanently positioned so that pressure exerted by the flat end of the lead is approximately 300 grams. |  |
| Fig. 2 | |
The metal accessory tube is also used to dress the lead to a 90° angle with a fine emery board. When point of lead needs to be dressed to a smooth cylindrical shape, loosen lead holder clutch and extend lead so it slightly extends from the metal tube. Then dress it by rotating a disc of 400 grit carborundum paper or a very fine emery board across the end surface of the lead until lead is smooth on edges (See Fig. 3). |  |
| Fig. 3 |
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| Sharpening Detail | Tip Detail |
Reference | |
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| PricesPrices subject to change Prices listed in US dollars for domestic shipments within US, Canada, & Mexico only Export orders require quotations - click here for a quote For more info call us 1-800-762-2478 or 954-946-9454.Item NumberItemPricesSet of 14 pencil leads (6B to 6H), Stainless steel dressing tube, Mechanical lead holder, Attache caseHA-3363Pencil Scratch Hardness Tester$859.95Replacements/AccessoriesHA-3363/2BTurquoise Lead 2B set of 12 Leads22.05HA-3363/2HTurquoise Lead 2H set of 12 Leads22.05HA-3363/3BTurquoise Lead 3B set of 12 Leads22.05HA-3363/3HTurquoise Lead 3H set of 12 Leads22.05HA-3363/4BTurquoise Lead 4B set of 12 Leads22.05HA-3363/4HTurquoise Lead 4B set of 12 Leads22.05HA-3363/5BTurquoise Lead 5B set of 12 Leads22.05HA-3363/5HTurquoise Lead 5H set of 12 Leads22.05HA-3363/6BTurquoise Lead 6B set of 12 Leads22.05HA-3363/6HTurquoise Lead 6H set of 12 Leads22.05HA-3363/BTurquoise Lead B set of 12 Leads22.05HA-3363/FTurquoise Lead F set of 12 Leads22.05HA-3363/HTurquoise Lead H set of 12 Leads22.05HA-3363/HBTurquoise Lead HB set of 12 Leads22.05HA-3363/LExtra Set of 14 leads (Assorted Hardness 6B-6H)38.85HA-3363/PPencil Lead Holder Replacement13.65HA-3363/W1200g Auxiliary Weight with extended thumb mount screw94.50116805.5 x 9" 400 grit snadpaper sheet replacement, ASTM D336310.00 |
