I wouldn't know how to test ! Hence low price.
eBay
Tribrach with Swiss Type Adapter & 5/8 Thread Adapter, Dual Tube Bubble Level for Leica for Topcon Total Station GNSS GPS Survey
Aliexpress UK
The TOPCON AT-F6 Auto Level is a precision tool used for measuring surface levels with high accuracy. This particular unit, sold for parts, has not been tested. It is ideal for professionals in the construction and engineering industries who require reliable and precise measurements for their projects.
eBay
0-190 ohms Fuel Level Sensor/Water Level Stainless Steel A5 Sensor For Auto Car Boat Water Tank Level Indicato Fuel Level Gauge
Aliexpress UK
Topcon AT-G4 Auto Level For Surveying.. Condition is "Used". Dispatched with Royal Mail 2nd Class. Small crack seen on the dumpy level otherwise all in very good condition.see picture
eBay
Customized 240-33 Ohm Fuel Level Sensor for Water Level Oil Fuel Level Tank Gauge Marine Auto Car Fuel Level Sensor 100-600mm
Aliexpress UK
Got from a garage clearance TOP CON GREEN LABEL auto level AT-66 AND tripod don't no anything about it as iv said was from a garage clearance seems to work but I don't no what I'm doing with it
eBay
0~190ohm Car Water Level Gauge 52mm Water Level Meter Tank Indicator with 100mm-550mm Water Level Sensors for Car Boat 12V/24V
Aliexpress UK
The Topcon Auto Level, tripod, and staff are essential tools for accurate measurements and inspections. The Topcon brand is known for producing high-quality surveying equipment, making this product reliable for professional use. The included tripod provides stability and support for the Auto Level, ensuring precise results. With the addition of the staff, users can easily measure vertical angles and distances with ease. Ideal for various applications in the construction, engineering, and land surveying industries, this Topcon Auto Level set is a must-have for those needing accurate measurements in their work.
eBay
Digital Fuel Level Gauge with Flashing Alarm Car Fuel Level Meter 9-35V Fuel Level Tester for Auto Motorcycle
Aliexpress UK
Topcon at.g7 level. In used untested condition. A slight split in front lens plastic surround as shown in the photos. Leases are clear . Split in case instead as shown in the photos. Used but in nice condition. Some age and use related marks ect..
eBay
Auto Car Boat Fuel Level Sensor 0-190 ohm Stainless Steel A5 Oil Tank Level Meter Sensor 150mm 200mm 500mm Water Level Sensor
Aliexpress UK
Once the Tripod stand on the tripod is placed securely, it can be positioned by tightening the mounting screw. Flat Head Aluminum Die Casting Tripod, Survey, Contractor, Laser, Auto Level. Our tripod stands are designed to provide maximum stability and strength.
eBay
LUFI XF OBD2 Lcd digital turbo boost water temp oil pressure temperature gauge for car Afr RPM Fuel level Speed EXT Oil Meter
Aliexpress UK
Prism Pole for Leica Total Stations Surveying. Country/Region of Manufacture. Dose Not Apply.
eBay
Digital Dual Gauge with Alarm 52MM Water Level+Sewage Level Meter for Water/Sewage Level Sensor 0-190ohm Boat Car 12V24V Custom
Aliexpress UK