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There are 3 designs for Locks
Click on your choice

Lead screw lock TL

Slider Lock SL

Traveling Slider Lock TSL

Thread Lock

Thumbscrew-on-Lead Screw Lock This is the most common lock. It uses a simple thumb screw against the lead screw. Note: the end bearing block is usually longer than the standard end bearing block. See table below.

This lock type is not useful for Rapid Advance Style UniSlides because the slider can still move. I want to use this lock with a Scale and Vernier Model.

Series	Cost of TL or SL locks	TL End bearing block length
A15	$34	0.78"
A25	$36	1"
A40	$38	1"
A60	$45	1 3/8"
B90	$47	1 3/8"

slider lock

Slider Lock What you see: a thumbscrew located at the midpoint of the base length.

What you can't see: a 90° step milled into the side of the slider, the length of the slider. This gives a perpendicular surface for the screw to bear on and a positive lock. A single lock works if slider length, S, is equal to or greater than ½ the base length L.

However, if your base is longer you'll need multiple locks spaced along the base. To order lock on the right side, append “-SLR” to the model number. For a lock on the left side, add “-SLL”. See drawing below to identify right and left sides. What is the cost?

This Slider Lock is on the Left side

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Traveling Slider Lock This locking plate attaches to the slider; the thumb screw presses against the outside edge of the base. It can be mounted on either side of the base.

The lock is available in all Series but limited to Free Sliding, Screw Motion, Graduated Knob Types. Slider height is increased by 3/16" Series A15, 1/4" Series A25 and 3/8" Series A40, A60 and B90.

Series	Cost of TSL	3D Models in ACIS and STEP
A15	$47
A25	$51
A40	$56
A60	$60
B90	$82	NA	NA

multiple TSL
B25 Free Sliding UniSlide with deeper "B" base and 4 Traveling Slider Locks traveling slider lock Series A60

scale and vernier with lock

On models with a scale and vernier, the vernier is offset to the right to avoid being obscured by the payload. When adding a thumb lock to these models, we cut away the vernier plate (shown in pink) to avoid hitting the thumbscrew lock.

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