Hold your Kestrel Meter securely with this simple mounting clamp that can be attached to tripods or extension poles with a ¼-20 mounting screw. Rubber molding grips the Kestrel securely without scratching the meter. (Also holds smaller smart phones for the occasional selfie.) Open to a Maximum 3.5 in / 8.9 cm grip opening and closes to a minimum 1.5 in / 3.8 cm. The clamp is 5/8th of an inch wide and 1 inch high.