Brunson 2046X Series Optical Scale Extension Measuring Wheel Simply turn the excavator dipper

Simply turn the excavator dipper into an integrated measuring stick without having to leave the cabin

Solid Polyester Front with Mesh Back

25 inch (32 mm) outside diameter

Suitable for all robotic TPS work performed with a survey pole

Perfect for creating a custom solution

Brunson 2046X Series Optical Scale Extension Measuring Wheel Simply turn the excavator dipperFor those critical measurements longer than 20" (500 mm), the optical scale extension adds a 20" artifact to increase your precision measurement length up to 40". The optical scale extension uses a magnetic base to securely mount the invar extension bar and a scale holder from which the precision optical scale extends. Optical scales are sold separately in 5", 10" and 20" and 130 mm, 250 mm and 500 mm lengths.