I believe this is a dial gauge for measuring internal and external depths on an adjustable base. The gauge has no front cover and is stiff to return to 0 so will need some fettling to be right. See pictures for more details. Please see my other listing's for more vintage tools and ephemera.
eBay
Large dial 0-0.2mm 0.002mm Lever Dial Test Indicator Precision Dial Indicator Lever Dial Gauge Dial
Aliexpress UK
Used in original box.
eBay
SHAHE Backlight Digital Indicator 0-12.7 mm 1μm Electronic Micrometer Metric Inch Dial Indicator
Aliexpress UK
We will move quickly to answer. We have been purveyors of New England antiques for 50+ years and have retired on 12/31/2019. We will do everything in our power to represent our pieces honestly and for a fair price.
eBay
Dial Indicator 22Pcs M2.5 and 4-48 Thread Tip For Dial & Test Indicators Steel Dial Indicator Point
Aliexpress UK
Listed for sale is a vintage Ames 211.5 dial indicator .0001". This machinist tool is in pre-owned/used condition (see pictures) and will be shipped USPS Ground Advantage.
eBay
Dial Indicator 22Pcs M2.5 and 4-48 Thread Tip For Dial & Test Indicators Steel Dial Indicator Point
Aliexpress UK
eBay
Mitutoyo Micrometer 513-404 Analog Lever Dial Indicator Dial Accuracy 0.01 Range 0-0.8mm Diameter
Aliexpress UK
This tool is perfect for machinists who require accurate readings in their work.
eBay
Dial Indicator Micrometer Hour Type Indicator Precision Comparator Measuring Clock Indicator Dial
Aliexpress UK
NO EXCEPTIONS.
eBay
Shahe 0-1 mm Dial Indicator 0.001 mm Dial Indicator Gauge Metric Measurement Tools Gauge Indicator
Aliexpress UK
We are quick to respond and resolve. We do not have power cords to provide unless they are attached to the item or unless stated that they are provided. If one is pictured it is for testing purposes only unless it is attached or stated that it will be includ.
eBay
0-0.2mm 0.002mm 7Jeweld Miron Dial Test Indicator 0-0.8mm 0.01mm dial indicator dial Level Gauge
Aliexpress UK