An app designed specifically for tradespeople involved in pattern development fabrication in the trade of Sheet Metal, Boiler Maker, Insulation, and HVAC.

Use this app for the taking the pain out of marking out pattern developments for true lengths. It obtains most commonly use transitional pieces and more:
Lobsterback Bend, Elbow, Incline Tee, Frustum Cone, Flat Back Cone, Oblique Cone, Square to Round, Oblique Square to Round, Dome End, Trunnion (offset), Tee Hole Cost Out, Tee to Reducer, Y Branch and More.