Introduction
Spindle Form Carpenter's Level
Tall Form Inclinometer
Hall & Knapp Special Plumb and Level
Artificer's Level
Craftsman-made Level
Patent Level Company Inclinometer
Stanley Rule & Level Co. No. 96
Stanley Rule & Level Co. No. 98 Machinist's Level
Stanley Rule & Level Co. No. 32 Traunt's Patent Inclinometer
O. Hanks Patent Level