Mechanical pencil structure

Mechanical pencil with a fluid actuator

Mechanical pencil with a plastic chuck

Mechanical pencil with automatic and manual lead advance

Mechanical pencil with automatic lead advance

Mechanical pencil with automatic lead advance

Mechanical pencil with automatic lead advance

Mechanical pencil with automatic lead advance

Mechanical pencil with automatic lead feed

Mechanical pencil with automatic lead feed

Mechanical pencil with chuck closing by normal writing grip

Mechanical pencil with chuck closing by normal writing grip

Mechanical pencil with groove and lug structure

Mechanical pencil with improved slider mechanism

Mechanical pencil with latching chuck actuator

Mechanical pencil with lead feed responsive to writing pressure

Mechanical pencil with lead-feeding device operable by forward s

Mechanical pencil with lead-feeding device operable by forward s

Mechanical pencil with refill cartridge

Mechanical pencil with removable lead feed cover