Chrome plated umpires trammels are designed for quick and easy use, can be one person operated. Can be purchased separately for $120 each or the set of three for $360.
Available in 3 sizes (approx): Large trammel extends from 60cm to 114cm. Medium trammel extends from 30cm to 56cm. Small trammel extends from 15cm to 26cm.
Used by professional umpires.
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