FHC 3" Jaw IG Caliper - Fractional Wood's Double Channel Lifters and create a vacuum under

and create a vacuum under their gripping pad section

at the same time

The compound lever action holds the clamp jaws tight to prevent slippage during assembly

Compatible Fork Dimensions: 1-1/2" to 2-1/4" (38 to 57 mm) thick and 4" to 6" (102 to 152 mm) wide

FHC 3" Jaw IG Caliper - Fractional Wood's Double Channel Lifters and create a vacuum underThe 3JAWCAL greatly reduces the time spent when measuring the thickness of insulated glass. To use, just slide the jaw open and place around the sash frame. Then slide closed until you hear the adjusting screw touch the glass, and read the exact thickness on the scale of the caliper. Measures Glass Thickness without Having to Remove Trim Ideal for Measuring Insulated Glass in Sliding Doors and Windows Easy to Use Measurement Scale Visible on Either