Knit radar KR10 fits a lot (if not all) knitting machines (standard and other gauges) manufactured under the Silver/Silver Reed/Singer/Studio/Riccar/Empisal brand names.

It can use 1/2 and 1/4 scale patterns. It still uses the physical stitch scales *rulers with the numbers equal to the gauge calculated from your swatch).

It is electronic charting device and can either be connected to the outlet or operated with a battery.

The manual (available online for free) describes how to enter the gauge into the knit radar and how to operate it during knitting as well.