Tournament Sanctioned Scales, MLF/B.A.S.S. Rules & Livewell Culling · Japan · all prices

No maker publishes sales figures. These lists are built from best-seller and most-reviewed proxies (retailer rankings, review volume, awards) over the last five years — the source is shown under each entry.

1. Studio Ocean Mark Ocean Grip OG2510 with Built-in 10kg Scale — ¥32,450 JPY
   The pinnacle of Japanese saltwater and tournament grip engineering. Combines aircraft-grade CNC milled aluminum with an ultra-accurate integrated 10kg mechanical spring scale inside the handle.
2. Studio Ocean Mark Ocean Grip OG2920HD Heavy Duty with 20kg Scale — ¥41,800 JPY
   Heavy-duty edition built for trophy Biwako monster bass and offshore pelagics. Features reinforced stainless steel claw tips and a 20kg internal load scale with one-way cam locking.
3. Daiichiseiko Wani Grip Air with Digital Scale Holster Set — ¥8,250 JPY
   Crafted from ultralight carbon fiber reinforced polymer (CFRP). Features crocodile-tooth jaws that secure slender gamefish without dropping scales, paired with a rapid digital hanging scale.
4. DRESS Heavy Duty 8-in-1 Digital Fishing Scale with Fish Grip — ¥5,280 JPY
   DRESS tactical styling combined with 50kg heavy weighing capacity. Includes a blue backlit display, an integrated 1-meter steel tape measure, and a durable non-puncturing lip grip hook.
5. Rapala Japan Touch Screen Digital Scale 25kg (50 lb) Japan Spec — ¥9,680 JPY
   Japan tournament approved model calibrated in metric grams and kilograms. Features a high-contrast touch screen that stores 8 fish and computes overall tournament rankings.
6. Golden Mean GM Digital Scale with Multi-Hook — ¥4,180 JPY
   A compact favorite among Japanese sea bass and light rockfish anglers. Features a clear blue LED display, one-touch tare button, and an integrated carabiner for vest attachment.
7. Kahala Japan Heavy Duty 25kg Digital Scale with Auto Hold — ¥4,950 JPY
   Engineered with wave-damping algorithms that lock weights accurately even on rolling boat decks. The fold-away handle creates a compact, snag-free shape inside tackle boxes.
8. Smith Ltd. Classic Mechanical Hanging Spring Scale 10kg — ¥3,850 JPY
   An artisanal mechanical brass spring scale revered by Japanese mountain stream and native trout purists. Beautiful polished brass case that patinas with years of backcountry use.
9. East River Tackle BogaGrip 15 lb Japan Special Edition — ¥21,780 JPY
   The standard verification tool for Lake Biwa world record largemouth hunters. Precision-calibrated stainless internals deliver infallible repeatability for IGFA world record submissions.
10. Prox Digital Scale 25kg with Blue Backlight (PX805) — ¥2,970 JPY
    A ubiquitous and highly cost-effective digital scale found in tackle stores across Japan. Quick 2-second stabilization and bright blue illumination for night squid and seabass sessions.