3 inch Single Pyrometer (Gauge/Head Only, 600 -1600ºF) - 3 1/8 inch Cutout Size $104.40 3 inch Single Pyrometer Installation Kit (W/Standard Probe, 600 - 1600ºF) - Gauge/Head Sold Separately $45.90 3 inch Single Pyrometer Installation Kit (W/Ultra Thin Probe, 600 - 1600ºF) - Gauge/Head Sold Separately $74.20 3 inch Dual Pyrometer (Gauge/Head Only, 600 - 1600ºF) - 3 1/8' Cutout Size $154.80 3 inch Dual Pyrometer Installation Kit (W/Standard Probe, 600 - 1600ºF) - Gauge/Head Sold Separately $86.40 3 inch Dual Pyrometer Installation Kit (W/Ultra Thin Probe, 600 - 1600ºF) - Gauge/Head Sold Separately $116.10