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THUMBWHEEL COMPASS AND PRECISION DRAWING SETS 指南針和精密成套圖紙

THUMBWHEEL COMPASS AND PRECISION DRAWING SETS 指南針和精密成套圖紙

商品貨號：

T79

商品品牌：

單位：

商品型號說明：

T79 HELIX

HELIX T79 THUMBWHEEL COMPASS AND PRECISION DRAWING SETS 指南針和精密成套圖紙

Thumbwheel provides enhanced accuracy and precision.

Geared head for centring.

Double-knee joints are ideal for perfect small diameter circles.

Contains 2mm replacement leads and additional screws and nuts.