Robertson, Phillips, and the History of the Screwdriver
Pour yourself a glass of wine this evening and enjoy:
https://youtu.be/R-mDqKtivuI (15mins)
Robertson, Phillips, and the History of the Screwdriver
Pour yourself a glass of wine this evening and enjoy:
https://youtu.be/R-mDqKtivuI (15mins)
My Build Pics: https://www.dropbox.com/sh/t4vj51udn...Beo_60GFa?dl=0
A very interesting video, I was obviously aware of Philips but not Robinson, strangely today many of the 'cross head screws' are JIS (Japanese Industrial Standard) they have a dot on the side of the head or lines between the slots and do not 'cam out' like Philips. Semi-skilled mechanics on Japanese bikes and cars stripped out the screw heads due to using a Philips driver instead of a JIS driver, the Philips driver has tapered slots but the JIS has parallel slots.
It cost me quite a few quid when I started working with Honda just to buy the 6 Snap-on drivers required as with my previous work with Lambretta used either, allen cap head or slot..
Last edited by Peter; 08-11-2020 at 12:48 PM.
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