Kestrel Tripod Clamp - Holds any Kestrel Meter on 1/4-20 Tripod Mount Black 0. Rubber molding grips the Kestrel securely without scratching the meter. (Also holds smaller smart phones for the occasional selfie.) Maximum 4 in / 11 cm grip opening. Specifications for Kestrel Tripod Clamp: Manufacturer: Kestrel Color: Black Package Contents: Kestrel Tripod Clamp Hold your Kestrel Meter securely with this simple mounting clamp that can be attached to tripods or extension poles with a -20 mounting screw. Rubber molding grips the Kestrel securely without scratching the meter. (Also holds smaller smart phones for the occasional selfie.) Maximum 4 in / 11 cm grip opening.