Converting Laser Scan Gap to DPI

Chinese lasers tend to use a term called "Scan Gap". Scan Gap is how far the laser moves on the Y axis for each pass of the laser. Scan Gap is where you enter your DPI for engraving. DPI is in inches and Scan Gap is in Metric, so you do some maths.

DPI/25.4 = dpmm (Dots per millimetre)
1/dpmm = Scan Gap

Eg.
300/25.4 = 11.811 dpmm
1/11.811 = a scan gap of 0.0846

Some Converted for ease of use
1200 = 0.02116
800 = 0.03175
600 = 0.04233
500 = 0.05080
400 = 0.06350
300 = 0.0846
200 = 0.12700
150 = 0.1693
100 = 0.2540