
")+"
BdYZa<%+%%B[\#H^cXZ,$&&
For fractional TPI and 23 TPI:
Numbers 2 or 4, 1 or 3, or any two
opposing marks can be used.
For 3, 5, 7, 9, 11, 19, 27 odd
TPI and even 26 TPI: Any four
grouped numbers or marks can
be used.
For all other even numbered
TPI: Any number or mark can be
used. Note: Since the leadscrew
is a 4 TPI, then the thread dial is
not needed for any thread that is
divisible by 4.
Number of teeth on the
thread dial drive gear.
Thread Dial
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aZih ndj `cdl l]ZgZ dc i]Z aZVYhXgZl ndj XVc
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=dlZkZg! h^cXZ i]Z aZVYhXgZl ^h V ) IE>! i]Zc
i]Zi]gZVYY^Va^h cdicZZYZY[dgVcn i]gZVYi]Vi
^h Y^k^h^WaZ Wn )# GZ[Zg id i]Z >cY^XVidg IVWaZ ^c
Figure 68VcYhZZFigure 69[dgY^VaadXVi^dch#
;dg bZig^X Y^bZig^Va VcY bdYjaVg i]gZVY^c\! i]Z
i]gZVY Y^Va ^h cdi jhZY VcY ndj bjhi aZVkZ i]Z
]Va[cji aZkZg Zc\V\ZY jci^a i]Z i]gZVY^c\ _dW ^h
XdbeaZiZ#
Figure 69.I]gZVYY^VajhZ#
Figure 68.
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NOTICE
Always use the slowest speed possible for
threading, and avoid deep cuts or you may
not be able to disengage the half nut to pre-
vent an apron crash!
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