AIMILAR Engine Hour Meter 2" Round Mechanical Gauge — 8–80V AC/DC, Battery-Free Non-Resettable

The AIMILAR 2" Round Mechanical Engine Hour Meter is a battery-free, non-resettable runtime gauge that records total equipment hours on a rotating wheel display and runs from AC or DC 8–80V.

Compact and simple to fit into a standard 2-inch panel cutout, this mechanical hour meter gives a clear, persistent hour total to help you plan service intervals and monitor usage for vehicles and machines. Built with an ABS+PC housing and a mechanical numerical wheel, the device keeps counting without internal batteries and retains its reading when power is removed. It is designed for a wide voltage range to suit automotive, marine and industrial power systems.

How accurate and durable is the hour recording?

The meter logs runtime with one-tenth hour resolution and displays up to 99,999.9 hours on a mechanical wheel—enough range for long-term equipment records. It operates across a broad temperature band and uses rugged plastic housing for everyday conditions.

• Timing precision: 0.1-hour increments
• Maximum display: 99999.9 hours
• Operating/storage range: -20°C to +65°C (-4°F to 149°F)
• Durable ABS+PC enclosure, compact footprint

Will this fit my dashboard or control panel?

Yes — the meter is sized for the common 2-inch panel opening and includes the accessories needed for quick installation. Measure clearance behind the panel because the unit extends behind the mounting surface.

• Panel cut-out diameter: Ø49mm (standard 2" hole)
• Product diameter × depth: Ø56.2mm × 54mm (approx. 2.21" × 2.13")
• Supports panel thickness up to ~7.1mm (9/32") with supplied retainer clip
• Includes rubber gasket, retainer clip and two sets of spade terminals

How do I wire and power the meter?

The meter accepts AC or DC supply from 8 to 80 volts and is designed so polarity does not matter for connections, simplifying installation on varied systems. It draws its operating power from the host system, and the mechanical display preserves the total hours when power is removed.

• Wide voltage compatibility: AC/DC 8–80V (works with 12V, 24V, 36V, 48V systems)
• Non-polarized power connection for easier hookup
• Mechanical wheel display requires no internal battery
• Resets automatically to zero after reaching 99999.9 hours

What equipment is this best used on?

This hour meter is intended for monitoring cumulative runtime on mobile and stationary equipment where a reliable, low-maintenance record is needed. It’s suitable for gas- and electric-powered units and is commonly used in recreational, agricultural and power-generation applications.

• ATV, UTV, golf carts and tractors
• Marine vessels and boat engines
• Generators and battery-powered equipment
• Industrial machines and rental fleet assets

Who is this for? If you maintain motors, vehicles or fixed machinery and need an easy-to-read, non-resettable runtime counter that tolerates a broad range of voltages, the AIMILAR 2" Round Mechanical Engine Hour Meter is built for mechanics, fleet managers, small-business owners and DIYers who want dependable hour tracking without batteries or complicated electronics. Its straightforward installation kit and universal voltage support make it a practical choice for workshops, boats, farms and generators where routine servicing and runtime logging keep equipment running longer.