Topcon AT-B4 Automatic Level 24x
- 24X magnification
- IPX6 water resistance
- Magnetic damping compensator
- 360 degree horizontal circle
- 1:100 stadia, about 250 ft range
- Case, cloth, Allen wrench, manual included
Updated 21 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A weatherproof automatic level for surveying and site grades that settles quickly even near heavy equipment. Accuracy per distance is not listed, and the focus distance is stated two different ways.
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ASIN: B000KEQ596Model: AT-B4Category: Construction Levels
Overview
Shooting grades on a busy site is what the Topcon level handles, with magnetic damping that settles the line of sight despite vibration. You set it on a tripod, turn the endless fine adjustment without clamping, and read a rod through strong magnification.
Stable readings near traffic and machinery plus a high water rating make it a dependable all-weather site level. The horizontal circle allows angle layout. Accuracy figures are missing, and the minimum focus is given as both very short and slightly longer in different places.
Who it's for
Engineering and construction crews setting elevations outdoors will lean on its stability and weather sealing. Indoor trades are better served by a laser line tool.
Pros and cons
- Strong magnification for distance
- Water resistant for driving rain
- Magnetic damping resists vibration
- Clampless endless fine adjustment
- Accuracy per distance not listed
- Minimum focus stated inconsistently
- Tripod and rod not included
Performance notes
Readings stay steady because the magnetic damping settles the compensator quickly, even with ground vibration. Magnification and short focus help read rods both far and close. Tripod stability still sets the limit on precision.
Specifications
| Brand | Topcon |
|---|---|
| Model | AT-B4 |
| Dimensions & fit | |
| Item Dimensions L X W | 14 x 10 inches |
| Capacity & performance | |
| Range | Approximately 250 feet |
| Construction & materials | |
| Color | Yellow |
| Material Type | Acrylonitrile Butadiene Styrene, Plastic |
| Included components | |
| Included Components | Auto level, hard-shell carry case, lens cleaning cloth, Allen wrench, operators manual |
| Unit Count | 1 Count |
| Other details | |
| Level Measurement Type | Automatic level |
| Operation Mode | Automatic, magnetic damping compensator |
| Magnification | 24X |
| Water resistance | IPX6 |
| Horizontal circle | 360 degree |
| Minimum focus | 20 cm (7.9 in) per bullets, 1.6 ft per description |
| Stadia | 1:100 |
| Level Measurement Units | X, 100 |
| Style Name | Automatic,Digital,Standard,Magnetic,Horizontal |
Frequently asked questions
Does the Topcon AT-B4 work near heavy equipment?
Yes. Its magnetic damping system stabilizes the line of sight despite fine vibrations near heavy equipment or busy highways.
Is the Topcon AT-B4 waterproof?
It is rated IPX6, protected against powerful water jets and resistant to driving rain.
How far can the Topcon AT-B4 read?
The approximate range is 250 feet, with 24X magnification.