The Blog Of jtveg

Ken Shirriff's blog: A circuit board from the Saturn V rocket, reverse-... : In the Apollo Moon missions, the Saturn V rocket was guided by an advanced onboard computer system built by IBM. This system was built fro...

1541 Commodore Drive Schematics /pub/cbm/schematics/drives/new/1541/

Nicola's MAME Ramblings: Completed, at Last : As you'd probably noticed, the pics in the previous post are of the Bubble Bobble custom MCU. Despite being one of the most popular gam...

List of accidents and incidents involving airliners in the United Kingdom | owlapps

Understanding old British money - pounds, shillings and pence

31 different types of screw nuts. 1 – Low hex nut, Standard DIN 936 – DIN 439Finish: polished, white zinc plated, bricromatized 2 – Hexagon castle nut with high crown, DIN 935/2000Finish: polished, white zinc plated, bricromatized 3 – Hex flange spherical nut Finish: polished, white zinc plated, bricromatized 4 – Double hex nut Finish: polished, white zinc plated, bricromatized 5 – Hexagon castle nut with low crown, DIN 979/2000Finish: polished, white zinc plated, bricromatized 6 – Hexagon castle nut without crown, DIN 979 Finish: polished, white zinc plated, bricromatized 7 – Hexagon nut class 6, DIN 934 Finish: polished, white zinc plated, bricromatized, hot dip galvanized 8 – Hexagon nut class 8, DIN 934 Finish: polished, white zinc plated, bricromatized, hot dip galvanized 9 – Hexagon nut class 10 (hardened), DIN 934 Finish: polished, white zinc plated, bricromatized, hot dip galvanized 10 – Flange hex nut, DIN 13-6h-class 6 – DIN 6923 Finish: white zinc plated 11- Brass hex nut F...