WPI-card, control card

Name: Träffström Design WPI-card, control card - WPI-card, control card
Brand: Träffström Design
SKU: 50888684765515
Price: 14.0 USD
Availability: InStock

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Color

Black

Quantity

Description

A WPI control card is used by spinners to calibrate the yarn thickness and thus facilitate even spinning, and it can then be used to grade the thickness of the finished spun yarn.
It can also be used to check the thickness of a yarn you alr...