MM-812 arch jewelry scale with flip cover · 4 capacity tiers: 50 g (0.001 g) & 200 / 500 / 600 g (0.01 g) · 7 units: g/ct/dwt/ozt/gn/tl/oz · counting function · 20 g calibration weight included · 89×115×30 mm · 80 pcs/ctn · battery or USB rechargeable
The MM-812 is a compact arch-shaped jewelry scale with a transparent flip cover that protects the platform and the backlit LCD. Four capacity boards share one arch housing: 50 g at 0.001 g for gemstones and powders, 200 g / 500 g / 600 g at 0.01 g for counter work. A 20 g calibration weight is included in every box.
| Capacity | Resolution | Best for |
|---|---|---|
| 50 g | 0.001 g | Gemstones, diamonds, powder — milligram readability |
| 200 g | 0.01 g | Jewelry counter weighing, coins |
| 500 g | 0.01 g | General retail — herbs, hardware, food portions |
| 600 g | 0.01 g | Food portions, mail and small parcels |
The same housing, platform and button layout is used across all four boards, so one listing covers several price points and one spare-part set covers them all.
Units are switched with one key: ozt (troy ounce) and dwt (pennyweight) are the units gold and scrap buyers quote in, ct is for stones, gn for powder and archery, tl (tael) is the unit Asian gold shops trade in, oz for kitchen and postal work. No conversion chart needed at the counter.

The PCS counting function samples a part on the platform, then counts the rest of the batch piece by piece — handy for beads, screws and stones sold by quantity. Tare zeroes out trays and envelopes, and the transparent flip cover protects the platform and display between weighings.


Every MM-812 ships with a 20 g calibration weight in the box, and user calibration is supported on the scale itself — your customer can re-check accuracy without buying extra tools.







| Item | MM-812 arch jewelry scale with flip cover |
|---|---|
| Capacity options | 50 g / 200 g / 500 g / 600 g |
| Resolution | 0.001 g (50 g) · 0.01 g (200 / 500 / 600 g) |
| Weighing units | g / ct / dwt / ozt / gn / tl / oz |
| Functions | Weigh, count (PCS), tare, one-key unit switch, auto-off |
| Display | Backlit LCD |
| Power | 2 × AAA batteries (battery version) or USB rechargeable (rechargeable version) |
| Platform | Stainless steel |
| Size | 89 × 115 × 30 mm |
| Color | Black |
| Packing | 80 pcs / ctn |
| Certificates | CE-EMC, RoHS & FCC — documents per model |
Custom logo and color box on this housing from 500 pcs — an arch jewelry scale listing that stands apart from plain pocket scales.
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