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Blackwell Calculator-Regularity Model
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RogerB



Joined: 18 Dec 2014
Posts: 176
Location: Suffolk Coastal. U.K.

PostPosted: Wed Jan 02, 2019 8:03 pm    Post subject: Blackwell Calculator-Regularity Model Reply with quote

Does any one have any information about the 'Regularity Model'?

I have tried Google: Graces Guide:Motor Sport Archive and the Commercial Motor archive to no avail.

I have a small ad. from the Motor circa 1950 showing the device and the price of 30s 6p and that is about all the info. I have.

My reason for this request is that I'm writing one of my articles about the 1950's car accessory market so, someone,please help me......

RogerB
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Penman



Joined: 23 Nov 2007
Posts: 3943
Location: Lancashire

PostPosted: Wed Jan 02, 2019 8:22 pm    Post subject: Reply with quote

Hii
Does this help?
http://sliderules.co.uk/circular/Circ-Pages/Blackwell%20Speed-Distance%20Calc.html
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Bristols should always come in pairs.

Any 2 from:-
Straight 6
V8 V10
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mikeC



Joined: 31 Jul 2009
Posts: 1418
Location: Market Warsop, Nottinghamshire

PostPosted: Thu Jan 03, 2019 9:53 am    Post subject: Reply with quote

Highly popular with the rallying fraternity in the 1950s and 1960s; I've probably still got mine in a drawer somewhere ...
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in the garage: 1931 Austin 7, 1953 Lancia Appia
recently departed: 1967 Singer Chamois, 1914 Saxon, 1930 Morris Cowley, 1936 BSA Scout, 1958 Lancia Appia coupe, 1922 Star 11.9 ... the list goes on!
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RogerB



Joined: 18 Dec 2014
Posts: 176
Location: Suffolk Coastal. U.K.

PostPosted: Thu Jan 03, 2019 6:54 pm    Post subject: Reply with quote

Gentlemen,

Thank you for your responses....

The Blackwell Mk V looks a bit like a palm shaped computer; it is not a flat disc device (I have one of them from Speedwell). It appears to be three dials held in a casing. The dials are listed (top to bottom) SPEED: TIME and
DISTANCE.

If there is one out there please let me know..........

RogerB
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