Just switch it on to engage the magnet and off to release the magnet. The magnetic base has the screw hole on the top to install holder for dial indicator, gauge, line cutting, lifting bar and.
eBay
10-100MM 1PCS M2.5 inside thread gauge universal type micrometer dial indicator probe longer indicator Extension Stem gauge
Aliexpress UK
Size: approx. 12.1x66.3mm/0.48x2.61" (LxH). It can used for dial indicator and lever dial indicator. Easy using for magnetic base holder. 1 x Magnetic Base Stand Holder. Due to the difference between different monitors, the picture may not reflect the actual color of the item.
eBay
ALLSOME 0-3mm Centering Indicator Coaxial Centering Dial Test Indicator Center Finder Milling Tool 0.01mm Accuracy
Aliexpress UK
Adjustable Magnetic Gauge Base Holder Stand Digital Level Dial Test Indicator. A magnetic stand that uses a switchable permanent magnet for convenient mounting onto flat iron or steel surfaces. The arm can be hydraulically locked in any position using the knob on the upright.
eBay
0-0.8mm Precision Dial Gauge Test Lever Indicator Scale Meter Accuracy Indicator Center Finder Micrometre Free red jewel pin
Aliexpress UK
Thread: M5. Compact and Portable: With its compact design and lightweight construction, this dial gauge holder magnetic base is easy to carry around and convenient for on the go tasks. Item Type: Magnetic Base Holder.
eBay
0-25.4mm 0.01mm electronic digital indicator 0-12.7mm 0.001mm 0.00005 "Electronic Micrometer Metric Inch Dial Indicator Gauge
Aliexpress UK
1 for Dial Test Indicator Bracket (Bracket Only, Other Accessories Not Included). Can be used for Dial indicators, leverage for Dial indicators. Material: aluminum alloy. Flexible, robust and precise swivel joints that can be adjusted in any direction and position.
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0.001mm 12.7 25.4mm digital indicator RS232 (9holes) data output digital caliper Electronic Micrometer Dial Indicator Gauge Met
Aliexpress UK
Zero and reset function.
eBay
18-35-50-160mm Aluminum Alloy Digital Indicator Bore Gauges Indicator 0.01MM Dial Bore Gauge Internal Measure Cylinder tool
Aliexpress UK
This product link includes dial gauges of different specifications, as well as combinations of dial gauges and magnetic bases. Features: Powerful magnetic base holder with magnet switch. The flexible and sturdy rotary joint can adjust the direction and position arbitrarily.
eBay
HAIMER 3D Edge Finder Universal Detector Tool Centering Indicator Centering Dial Test Indicator Center Finder Accessories
Aliexpress UK
It can used for dial indicator and lever dial indicator, etc. Three dovetail mounts on the top, back, and front of the indicator provide a range of mounting options. With one magnetic base. The Holder is tri-fold flexible design.
eBay
CNC 2046S Lever Table Dial Indicator 0-0.8mm 0.01mm Gauge Scale Dovetail Rails Indicator Measuring Tool 513-404
Aliexpress UK