Your cart is currently empty!
SK 25.5mm Set Ring
$89.90
1 in stock
Description
CUSTOMS DELAYS, Octobers deliveries will be delayed.
Condition
New old stock (NOS). Light patina on the top and bottom faces from storage. Bore is clean and spotless, suitable as a master for checking.
Product Use / Description
Precision 25.5 mm set ring (master ring gauge) for zero-setting and verifying three-point internal micrometers (Holtest-type) and other bore measuring tools. Use as a stable reference to calibrate 20–30 mm class internal mics and to perform quick repeat checks during inspection.
Brand
SK (Japan)
Features / Specs
| Item | Detail |
|---|---|
| Type | Master set ring gauge |
| Nominal size | Ø25.5 mm |
| Intended use | Setting/calibrating 3-point hole micrometers and comparative bore gauges |
| Finish | Lapped bore; outer faces show light storage patina |
| Accuracy | Working master (grade not marked on item) |
| Compatibility | Ideal companion for 20–30 mm internal micrometers (Holtest-type) |
| Included | Set ring only (no certificate or case unless shown in photos) |
| Condition notes | NOS; cosmetic patina externally; bore is clean and to size |
Additional information
| Condition | Used |
|---|
Additional information
| Condition | Used |
|---|
1 in stock
Sign up for product updates
Stay updated on the latest support products and exclusive offers. Subscribe now or contact us to discuss your needs.
