Hyamass Mini Vernier Caliper Keychain 6-Pack – Zinc Alloy Pocket-Sized Measuring Tool with 3D Movable Vernier Caliper Key Chain Precision Miniature Pocket Vernier Caliper Keyring

Description Color: Bronze Material: Zinc alloy Size a: 110X30mm/4.29X1.18in Size b: 115X30mm/4.49X1.18in Package Include: 3 x vernier callipers keychain 3 x straightedge keychain

Features

• [( Miniature Vernier Caliper Keychain Dual-Purpose Tool)] Precision-engineered zinc alloy caliper functions as both 0-50mm measuring tool and stylish keyring. Features 3D movable jaws with 0.02mm accuracy, ideal for automotive gauging and purse chain measurements
• [( Laser-Engraved Measurement Scale System)] Polished stainless steel ruler keychain with electroplated finish, displaying dual imperial/metric scales. Mirrored surface enhances readability under low light, certified to ASTM E18 tolerance standards
• [( Instant Key Organization Solution)] Industrial-grade split ring mechanism holds up to 12 standard keys. Quick-release clasp designed for car key fobs, house keys, and workplace access cards. Includes anti-rotation lock for secure carry
• [( Compact Professional-Grade Dimensions)] 4.29″x1.18″ caliper pairs with 4.49″ straightedge – 35% smaller than standard tools. CNC-machined edges prevent pocket wear, fits all tactical pouches and compact wallets
• [( Forged Zinc Alloy Construction)] Military-standard alloy withstands 200kg/cm2 pressure. Salt-spray tested for 500hrs, includes 5-year rust protection warranty. Meets ANSI/ASME B107.54 durability requirements