Check the listing for details. OPPAMA PULSE ENGINE TACHOMETER (GASOLINE ENGINE) PET-1000R. Condition: New. Listed at 179.99 USD. Only for gasoline engines.You can measure the number of revolutions just by bringing it closer to the spark plug cord.You can measure in the 1.2m range by using the attached antenna lead wire.It can measure 2-stroke 1, 2-cylinder and 4-stroke 2, 4-cylinder and 1-turn 1-ignition.gasoline engine 2-stroke 1, 2-cylinder4-stroke 2, 4-cylinder* (4 stroke 1 cylinder) Item description: Brand: OPPAMA Item Name: Pulse Engine Tachometer Part Number: PET-1000R Size: Battery life: 20000 hoursMeasurement accuracy: ± 10r / minMeasurement range (rpm): 100-19980Resolution (rpm): 10Detection distance (mm): 150Width (mm): 62Depth (mm): 13Height (mm): 120Power supply: Built-in battery (non-replaceable)Measurement method: Pulse detection Weight: 73g Other Details: Set: Antenna lead wire, Hanging string Combine Shipping:Please request invoice when you purchase multiple items. Handling Time: We ship out within 3-5 business days after receiving payment. Tracking Information: We provide tracking number once item as shipped. Customs duty: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Payment: Various payment methods are available on ebay. Payment is expected within 7 business days. About Us: We are specialized store in Japanese Tool brand. Please contact us if you have any question. Ninja Tools - 忍者工具店