Clark Brothers Instruments

Speedscreen are the Australian distributor for Clark Brothers Ratio Boxes and components.

Speedscreen stock Imperial Ratio box kits and make our own unique Metric Ratio Box kits. These kits include:-

• Housings
• Input and Output Shafts
• Drive Tip
• Washer
• Seal
• Assembly Screws

Gears can be purchased separately or Speedscreen can manufacture a ratio box to your desired ratio.

Please contact our sales staff for more information.