Image 1 & 2: Manta Gauge
The Manta Gauge Master was designed by Vicmarc and dns Germany.  The advantages of the Manta are:
Reduction of the edge angles to easy-to-remember numbers.
Reduction to 5 edge angles of woodturning tools with a clear classification via symbols.
Two practical checking options for the edge angle: sighting and insertion.
The shape of the tip of the tool is just as important as the bevel angle.  The Manta shows the correct profile of the most popular widths of spindle gouges i.e. 6, 10, 13 and 20mm.
For skew chisels you are able to check the bevel angle as well as the skew angle: 55 degrees or 77 degrees depending on your preference.
 
Image 3 & 4: Eccentric Chuck Gauge #1 & Eccentric Chuck Gauge #3
 
These above gauges are sizing tools which assist you in turning diameters to the exact sizes shown on the gauge.
Eccentric Chuck Gauge #1 = 10, 18, 22, 32 and 40mm cut outs
Eccentric Chuck Gauge #3 = 22, 40 and 52mm cut outs
 
Image 5: Gauge Master Center Finder
 
The Vicmarc Gauge Master was specially designed for wood turners to save time and money.  This device incorporates angle checking and centre finding.  This product is manufactured in Australia from injection moulded aluminium for durability.  It also includes symbols as a guide for sharpening angles of various tools.  The gauge master is clearly marked and easy to read
 
Image 6: VM90/100 Dovetail Size Marking Gauge - V00816
Image 7: VM120/150 Dovetail Size Marking Gauge - V00817
 
The new Dovetail Jaw Marking Gauge makes it simple to find accurate sizes for the internal and external dovetails of the chuck jaws. You can place the points of a divider into the holes for the jaws you are using (if clamping you will use outer holes, if expanding you will use the inner holes). The gauge is made from Stainless Steel so it will not rust and can either be screwed to the bench or the wall.