Is the sticky substance that is used to stick the level to the wall reusable? Will it stick to most any wall material?

Thank you for your question. Yes, the adhesive putty is reusable. Eventually it will not stick as well so it will need to be replaced with new non-abrasive adhesive putty. It will hold securely on most smooth surfaces. If you have further questions please feel free to contact our Bosch Customer Service Representatives at 1-877-BOSCH-99 (1-877-267-2499).

How would I be able to stick this on the wall If I wanted to level some wall art?

It comes with a type of sticky clay or substance that allows you to stick it to the wall.

Can this span 20 feet indoors?

I just completed a 20x12 kitchen floor tile. It works well for the 20ft length. But bumpy surface certainly won't help the situation. So, you do need to position the laser a bit higher than the tiles so the whole length can be covered. Just keep in mind that the laser is just to help for the planning. I did used a level to make sure the tiles were lined up straight, even I have the laser guided me.

Will this work on measuring fabrics on a straight line?

It will mark a straight line but is not a measuring device.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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Bosch Professional Tile and Square Layout Laser GTL3

Product ID: 375679363

Details

Brand
BOSCH
Colour
Blue
Material
Plastic
Product dimensions
15.6L x 10.2W
Style
65 ft. Floor

📏±1/2 inch accuracy @ 30 ft

🔴650 nm bright laser lines

🧲Adhesive mounting for secure hold

Description

📐 Level up your space with Bosch precision—because your projects deserve the sharpest edge!

PRECISION PERFECTED - Achieve flawless layouts with ±1/2 inch accuracy at 30 feet—never second guess your measurements again.
PRO GRADE VERSATILITY - Perfect for kitchen tiles, bathroom floors, and walls—this compact tool is your go-to for professional-grade squaring.
LASER SHARP VISIBILITY - Bright, crisp 650 nm laser lines ensure your 90° angles and alignments pop on any surface, even in challenging light.
SECURE STABLE PLACEMENT - Non-abrasive adhesive mounting strips keep your laser locked in place on smooth surfaces for hands-free precision.
EFFORTLESS ONE BUTTON OPERATION - Start your project instantly with a simple push—two perpendicular laser lines activated in a snap.

The Bosch GTL2 Laser Level Square projects highly visible horizontal and vertical laser lines with ±1/2 inch accuracy at 30 feet. Featuring a 650 nm Class II laser, one-button operation, and secure adhesive mounting strips, it’s designed for quick, precise 90° layouts on smooth surfaces—ideal for tiling and flooring professionals seeking reliable, hands-free alignment.

Specifications

ASIN	B002OHDSMO
ASIN	B002OHDSMO
Batteries	4 AAA batteries required. (included)
Best Sellers Rank	#89,429 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement )
Brand Name	BOSCH
Color	Blue
Customer Reviews	4.5 4.5 out of 5 stars (1,028)
Customer reviews	4.5 4.5 out of 5 stars (1,028)
Date First Available	6 August 2012
Department	Lasers
Included Components	(1) GTL3 Wall/Floor Covering Laser
Is Discontinued By Manufacturer	No
Item Dimensions L x W	15.6L x 10.2W centimeters
Item Highlight	Durable construction, professional grade, reliable performance, contractors, stable mounting, surveying, construction
Item Type Name	Line Lasers
Item Weight	0.9 Pounds
Item model number	GTL3
Manufacturer	Bosch
Manufacturer	Bosch
Manufacturer Part Number	GTL3
Material Type	Plastic
Model Number	GTL3
Number of Items	1
Operation Mode	Manual
Product Dimensions	15.56 x 10.16 x 9.84 cm; 408.23 g
Style Name	65 ft. Floor Laser Level and Square
UPC	000346389661
Unit Count	1.0 Count

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