IN STOCK READY TO SHIP !! Engine squish gauges for sale. They will accurately measure the squish with flat, dished or domed piston and/or button profiles. Has reduced diameter plunger to retain the strength of the adapter where it screws in the button. Very easy to get your squish perfect and you can record the contact measurement for each of your engines and accurately measure the squish at any time before or after shim changes. $75 digital plus $5 USPS priority shipping in states and $20 international shipping.