So what do they say about it --- the product desciption says:
Applications
Use the FatMax Tru Laser to quickly and accurately measure room sizes, ceiling heights, and long runs of fencing and railings; and it also performs addition and subtraction, calculates area, and determines volume. This advanced tool is a fantastic choice for almost any professional contractor, designer, technician, or appraiser.
The FatMax Tru Laser offers exceptional accuracy.
Key Technical Specs
* Accuracy: +/- 1/4 inch (6mm) at 100 feet
* Range: 2 - 100 feet
* Display: 2-line LCD
* Indicators: low battery, message codes, measurement reference, and more
* Batteries: 9 volt (included)
Warranty
Stanley warrants its products to the original purchaser for its useful life -- not to exceed one year for this electronic device -- against deficiencies in material and workmanship.
What's in the box:
FatMax Tru Laser tool with a 9-volt battery, owner’s manual, compact belt case.
About the CST/berger Brand
Founded in 1903, Chicago Steel Tape (today known as CST/berger) began as a manufacturer of steel measuring tapes. A pioneer in providing surveyors with innovative, quality instruments at competive prices. Now as a result of over 100 years of manuafacturing experience, global marketing strategies, state-of-the art technologies, and the addition of products for teh building and construction markets, CST/berger has become USA's largest, and one of the world's leading, vertically integrated manufactures of surveying accessories, as well as building and construction instruments. CST/berger became a subsidiary of Stanley in 2004.
From the Manufacturer
The FatMax TLM100 is a real laser distance meter utilizing laser technology to measure distances, areas and volumes. Laser distance meters are highly accurate in comparison to sonic distance meters. The TLM100 features a 1/4-inch accuracy at 100 feet, as opposed to a 4-inch accuracy at 50 feet common with sonic measuring devices. The TLM100 is quick and efficient: Just point the laser, press the button and measure. This one person measuring tool saves you both time and money. The TLM100 is extremely versatile and safe. Measure indoors, out-doors, hard to reach places or hazardous areas. The TLM100 comes packed with several user friendly applications such as measuring linear distances, adding and subtracting distance measurement, area calculations, and volumes at the touch of a button. The tool is perfect for anyone measuring distances up to 100ft, and can be used in a variety of occupations...Realtors, Estimators, Window and Glass contractors, Flooring and Tiling, Painting & Carpet Laying just to name a few. Best of all it is perfect for amateurs and professionals alike. The TLM100 comes complete with the TLM100 tool, owners manual and a compact belt case.
Product Details
* Product Dimensions: 5 x 3 x 2 inches
I think when you go into a house/apartment you want to buy/rent/get ... you ought to have one of these gadgets ....and then you could know the room dimensions accurately ... right away.