Only 6cm by 3.5cm, so can easily be attached directly to the engine and left on it. No need to remember which engine number is which on your Alfano or MyChron meters.
Fitting instructions:
Fit the hour meter in a convenient place. Ensure it is not too close to the exhaust.
Wrap the wire around the HT lead several times and secure it with tap or cable ties.
Please note:
Colour may vary a little from the photo
Not "retail packed" as shown in the photo. They are new in a small bubble wrap bag.