$250.00
A caliper to measure ERD – Effective Rim Diameter – used in spoked wheel building.
Get your spoke lengths exactly right with CalipERD! This tool measures Effective Rim Diameter – the most critical dimension when determining spoke length.
Current methods to measure rims are clumsy and imprecise. With this tool you can get results that are Accurate, Precise, Repeatable, & Fast.
This provides the perfect spoke length by determining the correct nipple seat diameter.
Use as a strict measuring tool or enjoy the adjustable window to allow one-shot exact ERD measurement!
Use cases include:
CalipERD™ Instruction Manual v1.1
CalipERD™
Weight | 475 g |
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Dimensions | 39 × 5 × 7 in |
Knob Color | Orange, Blue, Red, Green |